chore: sync uc-deliveries Space

.dockerignore

@@ -0,0 +1,6 @@
+target/
+.git/
+.osm_cache/
+test-results/
+playwright-report/
+*.rs.bk

.gitattributes

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+*.7z filter=lfs diff=lfs merge=lfs -text
+*.arrow filter=lfs diff=lfs merge=lfs -text
+*.bin filter=lfs diff=lfs merge=lfs -text
+*.bz2 filter=lfs diff=lfs merge=lfs -text
+*.ckpt filter=lfs diff=lfs merge=lfs -text
+*.ftz filter=lfs diff=lfs merge=lfs -text
+*.gz filter=lfs diff=lfs merge=lfs -text
+*.h5 filter=lfs diff=lfs merge=lfs -text
+*.joblib filter=lfs diff=lfs merge=lfs -text
+*.lfs.* filter=lfs diff=lfs merge=lfs -text
+*.mlmodel filter=lfs diff=lfs merge=lfs -text
+*.model filter=lfs diff=lfs merge=lfs -text
+*.msgpack filter=lfs diff=lfs merge=lfs -text
+*.npy filter=lfs diff=lfs merge=lfs -text
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+*.safetensors filter=lfs diff=lfs merge=lfs -text
+saved_model/**/* filter=lfs diff=lfs merge=lfs -text
+*.tar.* filter=lfs diff=lfs merge=lfs -text
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.pre-commit-config.yaml

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+repos:
+-   repo: https://github.com/pre-commit/pre-commit-hooks
+    rev: v4.5.0
+    hooks:
+    -   id: check-yaml
+    -   id: end-of-file-fixer
+    -   id: trailing-whitespace
+    -   id: check-merge-conflict
+    -   id: check-added-large-files
+
+-   repo: https://github.com/gitleaks/gitleaks
+    rev: v8.18.0
+    hooks:
+    -   id: gitleaks
+-   repo: https://github.com/doublify/pre-commit-rust
+    rev: v1.0
+    hooks:
+    -   id: fmt
+        args: ["--", "--check"]
+    -   id: clippy
+        args: ["--", "-D", "warnings"]

AGENTS.md

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+# Repository Guidelines
+
+## Project Structure And Naming
+
+This repo follows the current `solverforge-cli` app shape. The app package
+version is `1.0.1`, and the release binary is `solverforge_deliveries`.
+
+- `src/domain/mod.rs` owns the `solverforge::planning_model!` manifest.
+- `src/domain/plan.rs` owns the `Plan` planning solution.
+- `src/domain/delivery.rs` owns the `Delivery` problem fact.
+- `src/domain/vehicle.rs` owns the `Vehicle` planning entity and its
+  `delivery_order` list variable.
+- `src/domain/preview.rs` owns transport/view preview structs.
+- `src/domain/route_metrics/` owns route preparation, CVRP hooks, scoring
+  preview, route geometry, and insertion ranking.
+- `src/constraints/` owns one score rule per file plus `mod.rs` assembly.
+- `src/data/data_seed/` owns deterministic city demo-data modules with grouped
+  visit files for scaled delivery counts.
+- `src/api/` owns REST, DTO, and SSE surfaces.
+- `src/solver/` owns retained-job runtime orchestration.
+- `static/app/models/` owns frontend plan modeling.
+- `static/app/ui/` owns browser layout and rendering helpers.
+
+Keep the canonical solution name `Plan`. Do not reintroduce `DeliveryPlan` or
+`delivery_plan.rs`.
+
+## File Size Rule
+
+No source, test, frontend, config, or repo documentation file should reach 300
+lines. Split by responsibility before that point. Large generated/cache output
+under `target/` and `.osm_cache/` is outside this rule.
+
+## Build And Validation Commands
+
+- `make help` shows the supported command surface.
+- `make run-release` runs the app locally on `:7860`.
+- `make test` runs Rust, frontend, and Playwright browser tests.
+- `make test-e2e` runs the real browser Playwright smoke.
+- `make space-build` builds the Docker image used by Hugging Face Spaces.
+- `make space-run` builds and runs that image locally.
+- `make ci-local` runs formatting, clippy, release build, standard tests, and
+  the Space Docker image build.
+- `make test-live-road` runs the env-enabled road-network smoke test.
+- `make pre-release` runs `ci-local` and the live road-network smoke.
+- `cargo test` runs Rust unit and integration tests.
+- `node --test tests/frontend_models.test.mjs` runs frontend model tests.
+
+Use the Makefile as the authoritative local workflow, matching the
+`solverforge-hospital` Space/Docker validation standard.
+
+## No Suppression Policy
+
+Do not add warning suppressions, fallback compatibility branches, or unused
+helper modules. If a split creates unused code, restructure the modules so each
+compiled item is used by its crate.
+
+## Documentation Policy
+
+Keep `Cargo.toml`, `Cargo.lock`, `Makefile`, `Dockerfile`, `README.md`,
+`WIREFRAME.md`, `AGENTS.md`, `docs/screenshot.png`,
+`solverforge.app.toml`, `solver.toml`, `static/sf-config.json`, and the visible
+API guide in
+`static/app/ui/api-guide.mjs` aligned.
+
+When changing routes, solver policy, demo IDs, dependency sources, file layout,
+or browser behavior, update the docs and screenshot in the same patch. Prefer
+current-state documentation over planning language.
+
+## Testing Guidance
+
+Add Rust unit tests next to the behavior they protect. Add API integration
+coverage under `tests/api_contract/` and shared integration helpers under
+`tests/support/` only when every helper is used by the single
+`tests/api_contract.rs` crate. Add frontend model tests in
+`tests/frontend_models.test.mjs`, and browser-flow tests in `tests/e2e/`.
+
+Road-network tests should stay env-gated unless the test uses only cached or
+straight-line behavior. Use `SOLVERFORGE_RUN_LIVE_TESTS=1` through
+`make test-live-road` when validating live map/routing paths.
+
+## Runtime Notes
+
+`solver.toml` is embedded by `Plan` through the planning-solution macro. Treat
+it as the solver policy source of truth.
+
+`Cargo.toml` currently uses Rust `1.95` and crates.io dependency declarations.
+Keep every direct dependency declaration, `solverforge.app.toml`, `Cargo.lock`,
+and docs truthful if dependency sources or versions change.
+
+The app serves stock `solverforge-ui` assets, local static app modules, and
+Axum API routes from one process. Retained solver jobs are controlled through
+REST and observed through SSE.

CHANGELOG.md

@@ -0,0 +1,19 @@
+# Changelog
+
+All notable changes to this use case are documented in this file.
+
+## 2.0.0 (2026-05-14)
+
+### Maintenance
+
+* **release:** set the public app release line to 2.0.0 across Cargo metadata and release validation.
+
+## 1.0.1 (2026-05-14)
+
+### Features
+
+* **deliveries:** publish the SolverForge deliveries use case in the bundle.
+
+### Maintenance
+
+* **release:** align the bundled app with SolverForge 0.13.1, solverforge-ui 0.6.5, and solverforge-maps 2.1.4.

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Cargo.toml

@@ -0,0 +1,37 @@
+[package]
+name = "solverforge-deliveries"
+version = "2.0.0"
+edition = "2021"
+rust-version = "1.95"
+description = "Constraint optimizer built with SolverForge"
+
+[[bin]]
+name = "solverforge_deliveries"
+path = "src/main.rs"
+
+[dependencies]
+solverforge = { version = "0.13.1", features = [
+  "serde",
+  "console",
+  "verbose-logging",
+] }
+solverforge-ui = "0.6.5"
+solverforge-maps = "2.1.4"
+# Web server
+axum = "0.8.9"
+tokio = { version = "1.52.3", features = ["full"] }
+tokio-stream = { version = "0.1.18", features = ["sync"] }
+tower-http = { version = "0.6.10", features = ["fs", "cors"] }
+tower = "0.5.3"
+
+# Serialization
+serde = { version = "1.0.228", features = ["derive"] }
+serde_json = "1.0.149"
+rand = "0.10.1"
+
+# Utilities
+uuid = { version = "1.23.1", features = ["v4", "serde"] }
+parking_lot = "0.12.5"
+
+[dev-dependencies]
+http-body-util = "0.1.3"

Dockerfile

@@ -0,0 +1,34 @@
+# Multi-stage build for solverforge-deliveries.
+#
+# The app is intended to build from registry dependency declarations, so the
+# repository root is the complete Docker build context:
+#   docker build -f Dockerfile -t solverforge-deliveries .
+
+FROM rust:1.95-alpine AS builder
+
+RUN apk add --no-cache musl-dev
+
+WORKDIR /build
+
+COPY Cargo.toml Cargo.lock ./
+COPY src/ ./src/
+COPY static/ ./static/
+COPY solver.toml ./solver.toml
+
+RUN cargo build --release --target x86_64-unknown-linux-musl
+
+FROM alpine:latest
+
+RUN apk add --no-cache ca-certificates
+
+WORKDIR /app
+
+COPY --from=builder /build/target/x86_64-unknown-linux-musl/release/solverforge_deliveries ./solverforge_deliveries
+COPY --from=builder /build/static/ ./static/
+COPY --from=builder /build/solver.toml ./solver.toml
+
+ENV PORT=7860
+
+EXPOSE 7860
+
+CMD ["./solverforge_deliveries"]

Makefile

@@ -0,0 +1,282 @@
+# SolverForge Deliveries Makefile
+# Rust + frontend + Space-oriented local build system.
+#
+# This app is validated for local development and Docker-based Hugging Face
+# Space deployment. `ci-local` therefore includes a Docker image build.
+
+SHELL := /bin/sh
+.SHELLFLAGS := -eu -c
+unexport BASH_FUNC_mc%%
+
+# ============== Colors & Symbols ==============
+GREEN := \033[92m
+EMERALD := \033[38;2;16;185;129m
+CYAN := \033[96m
+YELLOW := \033[93m
+RED := \033[91m
+GRAY := \033[90m
+BOLD := \033[1m
+RESET := \033[0m
+
+CHECK := OK
+CROSS := FAIL
+ARROW := =>
+PROGRESS := ..
+
+# ============== Project Metadata ==============
+APP_NAME := solverforge_deliveries
+PACKAGE_NAME := solverforge-deliveries
+VERSION := $(shell sed -n 's/^version = "\(.*\)"/\1/p' Cargo.toml | head -n1)
+RELEASE_TAG := $(PACKAGE_NAME)@$(VERSION)
+RUST_VERSION := 1.95+
+PORT ?= 7860
+DOCKER_IMAGE ?= $(PACKAGE_NAME)
+DOCKER_CONTEXT ?= .
+DOCKERFILE_PATH := Dockerfile
+PLAYWRIGHT ?= ../node_modules/.bin/playwright
+
+# ============== Phony Targets ==============
+.PHONY: banner help doctor build build-release run run-release test test-rust \
+        test-frontend-syntax test-frontend test-e2e test-live-road test-one lint fmt \
+        fmt-check clippy check ci-local space-ci space-build space-run docker-build \
+        docker-run pre-release release-ci release-info version clean watch require-node require-docker
+
+.DEFAULT_GOAL := help
+
+# ============== Banner ==============
+banner:
+	@printf "$(EMERALD)$(BOLD)  ____        _                _____\n"
+	@printf " / ___|  ___ | |_   _____ _ __|  ___|__  _ __ __ _  ___\n"
+	@printf " \\___ \\\\ / _ \\\\| \\\\ \\\\ / / _ \\\\ '__| |_ / _ \\\\| '__/ _\` |/ _ \\\\\n"
+	@printf "  ___) | (_) | |\\\\ V /  __/ |  |  _| (_) | | | (_| |  __/\n"
+	@printf " |____/ \\\\___/|_| \\_/ \\___|_|  |_|  \\___/|_|  \\__, |\\___|\n"
+	@printf "                                             |___/$(RESET)\n"
+	@printf "  $(GRAY)v$(VERSION)$(RESET) $(EMERALD)Deliveries demo build system$(RESET)\n\n"
+
+# ============== Environment Checks ==============
+require-node:
+	@command -v node >/dev/null 2>&1 || (printf "$(RED)$(CROSS) node is required for frontend validation$(RESET)\n" && exit 1)
+
+require-docker:
+	@command -v docker >/dev/null 2>&1 || (printf "$(RED)$(CROSS) docker is required for Space/Docker targets$(RESET)\n" && exit 1)
+
+doctor: banner
+	@printf "$(CYAN)$(BOLD)Environment Check$(RESET)\n\n"
+	@missing=0; \
+	if command -v cargo >/dev/null 2>&1; then \
+		printf "$(GREEN)$(CHECK) cargo: $$(cargo --version)$(RESET)\n"; \
+	else \
+		printf "$(RED)$(CROSS) cargo not found$(RESET)\n"; missing=1; \
+	fi; \
+	if command -v rustc >/dev/null 2>&1; then \
+		printf "$(GREEN)$(CHECK) rustc: $$(rustc --version)$(RESET)\n"; \
+	else \
+		printf "$(RED)$(CROSS) rustc not found$(RESET)\n"; missing=1; \
+	fi; \
+	if command -v node >/dev/null 2>&1; then \
+		printf "$(GREEN)$(CHECK) node: $$(node --version)$(RESET)\n"; \
+	else \
+		printf "$(RED)$(CROSS) node not found$(RESET)\n"; missing=1; \
+	fi; \
+	if command -v docker >/dev/null 2>&1; then \
+		printf "$(GREEN)$(CHECK) docker: $$(docker --version)$(RESET)\n"; \
+	else \
+		printf "$(YELLOW)! docker not found; Space/Docker targets will be unavailable$(RESET)\n"; \
+	fi; \
+	printf "$(GRAY)Docker build context: $(DOCKER_CONTEXT)$(RESET)\n"; \
+	printf "$(GRAY)Default app port: $(PORT)$(RESET)\n"; \
+	if [ $$missing -ne 0 ]; then exit 1; fi
+	@printf "\n"
+
+# ============== Build & Run ==============
+build: banner
+	@printf "$(ARROW) $(BOLD)Building $(PACKAGE_NAME)...$(RESET)\n"
+	@cargo build --bin $(APP_NAME) && \
+		printf "$(GREEN)$(CHECK) Debug build successful$(RESET)\n\n" || \
+		(printf "$(RED)$(CROSS) Debug build failed$(RESET)\n\n" && exit 1)
+
+build-release: banner
+	@printf "$(ARROW) $(BOLD)Building release binary...$(RESET)\n"
+	@cargo build --release --bin $(APP_NAME) && \
+		printf "$(GREEN)$(CHECK) Release build successful$(RESET)\n\n" || \
+		(printf "$(RED)$(CROSS) Release build failed$(RESET)\n\n" && exit 1)
+
+run:
+	@printf "$(ARROW) Running $(PACKAGE_NAME) on port $(PORT)...\n"
+	@PORT=$(PORT) cargo run --bin $(APP_NAME)
+
+run-release:
+	@printf "$(ARROW) Running release build on port $(PORT)...\n"
+	@PORT=$(PORT) cargo run --release --bin $(APP_NAME)
+
+# ============== Test Targets ==============
+test: test-rust test-frontend test-e2e
+	@printf "\n$(GREEN)$(BOLD)$(CHECK) Standard validation passed$(RESET)\n\n"
+
+test-rust: banner
+	@printf "$(ARROW) $(BOLD)Running cargo test --quiet...$(RESET)\n"
+	@cargo test --quiet && \
+		printf "\n$(GREEN)$(CHECK) Rust tests passed$(RESET)\n\n" || \
+		(printf "\n$(RED)$(CROSS) Rust tests failed$(RESET)\n\n" && exit 1)
+
+test-frontend-syntax: require-node
+	@printf "$(PROGRESS) Checking frontend module syntax...\n"
+	@find static/app -name '*.mjs' -print0 | xargs -0 -n1 node --check && \
+		printf "$(GREEN)$(CHECK) Frontend syntax checks passed$(RESET)\n" || \
+		(printf "$(RED)$(CROSS) Frontend syntax checks failed$(RESET)\n" && exit 1)
+
+test-frontend: test-frontend-syntax
+	@printf "$(PROGRESS) Running frontend tests...\n"
+	@node --test tests/frontend_models.test.mjs && \
+		printf "$(GREEN)$(CHECK) Frontend tests passed$(RESET)\n" || \
+		(printf "$(RED)$(CROSS) Frontend tests failed$(RESET)\n" && exit 1)
+
+test-e2e: build-release require-node
+	@printf "$(PROGRESS) Running Playwright browser tests...\n"
+	@$(PLAYWRIGHT) test --config tests/e2e/playwright.config.js && \
+		printf "$(GREEN)$(CHECK) Playwright browser tests passed$(RESET)\n" || \
+		(printf "$(RED)$(CROSS) Playwright browser tests failed$(RESET)\n" && exit 1)
+
+test-live-road: banner
+	@printf "$(ARROW) $(BOLD)Running live road-network route tests...$(RESET)\n"
+	@SOLVERFORGE_RUN_LIVE_TESTS=1 cargo test live_demo_locations_are_mutually_reachable_when_enabled -- --nocapture && \
+		SOLVERFORGE_RUN_LIVE_TESTS=1 cargo test road_network_job_routes_work_when_live_tests_are_enabled -- --nocapture && \
+		printf "\n$(GREEN)$(CHECK) Live road-network test passed$(RESET)\n\n" || \
+		(printf "\n$(RED)$(CROSS) Live road-network test failed$(RESET)\n\n" && exit 1)
+
+test-one:
+	@printf "$(PROGRESS) Running test: $(YELLOW)$(TEST)$(RESET)\n"
+	@RUST_LOG=info cargo test $(TEST) -- --nocapture
+
+# ============== Lint & Format ==============
+fmt:
+	@printf "$(PROGRESS) Formatting Rust code...\n"
+	@cargo fmt
+	@printf "$(GREEN)$(CHECK) Code formatted$(RESET)\n"
+
+fmt-check:
+	@printf "$(PROGRESS) Checking Rust formatting...\n"
+	@cargo fmt --check && \
+		printf "$(GREEN)$(CHECK) Formatting valid$(RESET)\n" || \
+		(printf "$(RED)$(CROSS) Formatting issues found$(RESET)\n" && exit 1)
+
+clippy:
+	@printf "$(PROGRESS) Running clippy...\n"
+	@cargo clippy --all-targets -- -D warnings && \
+		printf "$(GREEN)$(CHECK) Clippy passed$(RESET)\n" || \
+		(printf "$(RED)$(CROSS) Clippy warnings found$(RESET)\n" && exit 1)
+
+lint: fmt-check clippy test-frontend-syntax
+	@printf "\n$(GREEN)$(BOLD)$(CHECK) Lint checks passed$(RESET)\n\n"
+
+check: lint test
+
+# ============== Space & Docker ==============
+docker-build: require-docker
+	@printf "$(PROGRESS) Building Docker image $(DOCKER_IMAGE)...\n"
+	@docker build -f "$(DOCKERFILE_PATH)" -t "$(DOCKER_IMAGE)" "$(DOCKER_CONTEXT)" && \
+		printf "$(GREEN)$(CHECK) Docker image built$(RESET)\n" || \
+		(printf "$(RED)$(CROSS) Docker build failed$(RESET)\n" && exit 1)
+
+docker-run: require-docker
+	@printf "$(ARROW) Running $(DOCKER_IMAGE) on port $(PORT)...\n"
+	@docker run --rm -it -e PORT=$(PORT) -p $(PORT):$(PORT) "$(DOCKER_IMAGE)"
+
+space-build: docker-build
+
+space-run: space-build
+	@printf "$(GREEN)$(CHECK) Starting local container that mirrors the Space image$(RESET)\n"
+	@$(MAKE) docker-run --no-print-directory PORT=$(PORT) DOCKER_IMAGE=$(DOCKER_IMAGE)
+
+space-ci: ci-local
+
+# ============== CI & Release Validation ==============
+ci-local: banner
+	@printf "$(CYAN)$(BOLD)Local Validation Pipeline$(RESET)\n\n"
+	@printf "$(PROGRESS) Step 1/5: Format check...\n"
+	@$(MAKE) fmt-check --no-print-directory
+	@printf "$(PROGRESS) Step 2/5: Clippy...\n"
+	@$(MAKE) clippy --no-print-directory
+	@printf "$(PROGRESS) Step 3/5: Release build...\n"
+	@$(MAKE) build-release --no-print-directory
+	@printf "$(PROGRESS) Step 4/5: Standard test surface...\n"
+	@$(MAKE) test --no-print-directory
+	@printf "$(PROGRESS) Step 5/5: Docker/Space image build...\n"
+	@$(MAKE) space-build --no-print-directory
+	@printf "\n$(GREEN)$(BOLD)$(CHECK) LOCAL SPACE VALIDATION PASSED$(RESET)\n\n"
+
+pre-release: banner
+	@printf "$(CYAN)$(BOLD)Pre-Release Validation v$(VERSION)$(RESET)\n\n"
+	@$(MAKE) ci-local --no-print-directory
+	@printf "$(PROGRESS) Final step: live road-network smoke...\n"
+	@$(MAKE) test-live-road --no-print-directory
+	@printf "$(GREEN)$(BOLD)$(CHECK) Ready for publication or Space update$(RESET)\n\n"
+
+release-ci: ci-local
+	@printf "$(GREEN)$(BOLD)$(CHECK) Release CI passed for $(RELEASE_TAG)$(RESET)\n\n"
+
+release-info:
+	@printf "$(CYAN)Package:$(RESET) $(YELLOW)$(BOLD)$(PACKAGE_NAME)$(RESET)\n"
+	@printf "$(CYAN)Version:$(RESET) $(YELLOW)$(BOLD)$(VERSION)$(RESET)\n"
+	@printf "$(CYAN)Release tag:$(RESET) $(YELLOW)$(BOLD)$(RELEASE_TAG)$(RESET)\n"
+
+# ============== Metadata & Cleanup ==============
+version:
+	@printf "$(CYAN)Current version:$(RESET) $(YELLOW)$(BOLD)$(VERSION)$(RESET)\n"
+	@printf "$(CYAN)Release tag:$(RESET) $(YELLOW)$(BOLD)$(RELEASE_TAG)$(RESET)\n"
+	@printf "$(CYAN)Default port:$(RESET) $(YELLOW)$(BOLD)$(PORT)$(RESET)\n"
+
+clean:
+	@printf "$(ARROW) Cleaning build artifacts...\n"
+	@cargo clean
+	@printf "$(GREEN)$(CHECK) Clean complete$(RESET)\n"
+
+watch:
+	@printf "$(ARROW) Watching and rerunning the app on port $(PORT)...\n"
+	@cargo watch --version >/dev/null 2>&1 || \
+		(printf "$(RED)$(CROSS) cargo-watch is required for make watch$(RESET)\n" && exit 1)
+	@PORT=$(PORT) cargo watch -x "run --bin $(APP_NAME)"
+
+# ============== Help ==============
+help: banner
+	@/bin/echo -e "$(CYAN)$(BOLD)Environment:$(RESET)"
+	@/bin/echo -e "  $(GREEN)make doctor$(RESET)         - Check local cargo/rustc/node readiness"
+	@/bin/echo -e ""
+	@/bin/echo -e "$(CYAN)$(BOLD)Build & Run:$(RESET)"
+	@/bin/echo -e "  $(GREEN)make build$(RESET)          - Build the app in debug mode"
+	@/bin/echo -e "  $(GREEN)make build-release$(RESET)  - Build the app in release mode"
+	@/bin/echo -e "  $(GREEN)make run$(RESET)            - Run locally on port $(PORT)"
+	@/bin/echo -e "  $(GREEN)make run-release$(RESET)    - Run the release build on port $(PORT)"
+	@/bin/echo -e ""
+	@/bin/echo -e "$(CYAN)$(BOLD)Tests & Validation:$(RESET)"
+	@/bin/echo -e "  $(GREEN)make test$(RESET)           - Run Rust, frontend, and Playwright tests"
+	@/bin/echo -e "  $(GREEN)make test-rust$(RESET)      - Run Rust tests only"
+	@/bin/echo -e "  $(GREEN)make test-frontend$(RESET)  - Run frontend syntax checks and tests"
+	@/bin/echo -e "  $(GREEN)make test-e2e$(RESET)       - Run Playwright browser tests"
+	@/bin/echo -e "  $(GREEN)make test-live-road$(RESET) - Run the live road-network smoke test"
+	@/bin/echo -e "  $(GREEN)make test-one TEST=name$(RESET) - Run a specific Rust test with output"
+	@/bin/echo -e "  $(GREEN)make lint$(RESET)           - Run fmt-check, clippy, and frontend syntax checks"
+	@/bin/echo -e "  $(GREEN)make check$(RESET)          - Run lint plus standard tests"
+	@/bin/echo -e "  $(GREEN)make ci-local$(RESET)       - Run local Space validation pipeline"
+	@/bin/echo -e "  $(GREEN)make release-ci$(RESET)     - Run the tag-publish CI gate for this app"
+	@/bin/echo -e "  $(GREEN)make pre-release$(RESET)    - Run ci-local plus live road-network smoke"
+	@/bin/echo -e ""
+	@/bin/echo -e "$(CYAN)$(BOLD)Space & Docker:$(RESET)"
+	@/bin/echo -e "  $(GREEN)make space-build$(RESET)    - Build the Docker image used for Space deployment"
+	@/bin/echo -e "  $(GREEN)make space-run$(RESET)      - Build and run that image locally on port $(PORT)"
+	@/bin/echo -e "  $(GREEN)make docker-build$(RESET)   - Build the Docker image directly"
+	@/bin/echo -e "  $(GREEN)make docker-run$(RESET)     - Run the Docker image directly"
+	@/bin/echo -e ""
+	@/bin/echo -e "$(CYAN)$(BOLD)Other:$(RESET)"
+	@/bin/echo -e "  $(GREEN)make fmt$(RESET)            - Format Rust code"
+	@/bin/echo -e "  $(GREEN)make release-info$(RESET)   - Show package version and app-scoped release tag"
+	@/bin/echo -e "  $(GREEN)make version$(RESET)        - Show version and default port"
+	@/bin/echo -e "  $(GREEN)make clean$(RESET)          - Clean build artifacts"
+	@/bin/echo -e "  $(GREEN)make watch$(RESET)          - Watch source files and rerun the app"
+	@/bin/echo -e "  $(GREEN)make help$(RESET)           - Show this help message"
+	@/bin/echo -e ""
+	@/bin/echo -e "$(GRAY)Rust version required: $(RUST_VERSION)$(RESET)"
+	@/bin/echo -e "$(GRAY)Current version: v$(VERSION)$(RESET)"
+	@/bin/echo -e "$(GRAY)Release tag: $(RELEASE_TAG)$(RESET)"
+	@/bin/echo -e "$(GRAY)Default port: $(PORT)$(RESET)"
+	@/bin/echo -e ""

README.md

@@ -0,0 +1,206 @@
+---
+title: SolverForge Deliveries
+emoji: 🚚
+colorFrom: green
+colorTo: blue
+sdk: docker
+app_port: 7860
+pinned: false
+license: apache-2.0
+short_description: SolverForge delivery-route optimization example
+---
+
+# SolverForge Deliveries
+
+![SolverForge Deliveries screenshot](docs/screenshot.png)
+
+`solverforge-deliveries` is a SolverForge vehicle-routing app with retained
+jobs, route geometry, insertion recommendations, and a browser plan viewer.
+
+It answers one concrete question:
+
+"Given depots, vehicles, delivery stops, capacities, and time windows, which
+vehicle should visit each delivery and in what order?"
+
+## Quick Start
+
+```sh
+make run-release
+```
+
+Then open `http://localhost:7860`.
+
+To inspect the supported command surface:
+
+```sh
+make help
+```
+
+## Documentation Map
+
+- `README.md`
+  Quick start, model concepts, validation, REST API, and solver policy.
+- `WIREFRAME.md`
+  As-built architecture and runtime/data flow across backend, maps, and UI.
+- `AGENTS.md`
+  Codex-facing maintenance, validation, and documentation rules.
+- `Makefile`
+  Supported local commands for development, validation, Docker, and Space work.
+- `Dockerfile`
+  Docker Space image build using Rust 1.95 and the declared crates.io line.
+
+## Current Dependency Shape
+
+- Package: `solverforge-deliveries`; version is declared in `Cargo.toml`
+- Release binary: `solverforge_deliveries`
+- Rust: `1.95`
+- SolverForge runtime: `solverforge` `0.13.1`
+- Browser UI assets: `solverforge-ui` `0.6.5`
+- Routing engine: `solverforge-maps` `2.1.4`
+- Scaffold metadata: `solverforge-cli` `2.0.4` in `solverforge.app.toml`
+
+The app serves registry-backed Rust dependencies, local static browser modules,
+and Axum API routes from one process.
+
+## Model Concepts
+
+- `Delivery` is a problem fact: input data the solver reads but does not move.
+- `Vehicle` is a planning entity: each vehicle owns one mutable route.
+- `Vehicle.delivery_order` is the list planning variable: the sequence
+  SolverForge changes during construction and local search.
+- `Plan` is the planning solution: it owns deliveries, vehicles, routing mode,
+  view state, and the current `HardSoftScore`.
+- `RoutingMode` selects `road_network` or `straight_line` route geometry.
+
+The app ships three deterministic datasets: `PHILADELPHIA` with 82 deliveries,
+`HARTFORD` with 50 deliveries, and `FIRENZE` with 80 deliveries. Each dataset
+has ten vehicles and coherent capacity for the published stops.
+
+## Constraints
+
+Hard constraints:
+
+- Every delivery is assigned.
+- Vehicle capacity is not exceeded.
+- Vehicle routes respect delivery time windows.
+
+Soft constraints:
+
+- Total travel time is minimized.
+
+## REST API
+
+- `GET /health`
+- `GET /info`
+- `GET /demo-data`
+- `GET /demo-data/{id}`
+- `POST /jobs`
+- `GET /jobs/{id}`
+- `DELETE /jobs/{id}`
+- `GET /jobs/{id}/status`
+- `GET /jobs/{id}/snapshot`
+- `GET /jobs/{id}/analysis`
+- `GET /jobs/{id}/routes`
+- `POST /jobs/{id}/pause`
+- `POST /jobs/{id}/resume`
+- `POST /jobs/{id}/cancel`
+- `GET /jobs/{id}/events`
+- `POST /recommendations/delivery-insertions`
+
+`snapshot_revision={n}` is optional for snapshots, analysis, and routes. SSE
+clients receive a bootstrap event and then live retained-job events.
+
+## Solver Policy
+
+`solver.toml` is embedded by `Plan` and is the runtime source of truth.
+
+- `list_clarke_wright` builds initial delivery routes.
+- `list_k_opt` improves those routes before local search.
+- Local search combines nearby list change/swap, reverse, k-opt, ruin, and
+  limited sublist moves over `Vehicle.delivery_order`.
+- `late_acceptance` with an accepted-count forager keeps several candidate
+  moves alive per step.
+- Solving stops after 30 seconds total or after 5 seconds without improvement.
+
+`road_network` mode uses `solverforge-maps` to load a graph and return route
+geometry through `/jobs/{id}/routes`. `straight_line` mode is a fast draft and
+testing path.
+
+## Validation
+
+Standard validation:
+
+```sh
+make test
+```
+
+Full local validation:
+
+```sh
+make ci-local
+```
+
+Live road-network smoke:
+
+```sh
+make test-live-road
+```
+
+`make test` runs Rust tests, browserless frontend tests, and Playwright browser
+tests. `make ci-local` adds formatting, clippy, release build, and Docker image
+build. `make pre-release` runs `ci-local` plus the live road-network smoke.
+
+## Hugging Face Space Deployment
+
+This repo is Docker-Space ready. The Space reads the README front matter,
+builds `Dockerfile`, and expects the app to bind `PORT=7860`.
+
+Local Space-equivalent commands:
+
+```sh
+make space-build
+make space-run
+```
+
+## Read The Code In This Order
+
+1. `src/domain/mod.rs`
+   The `planning_model!` manifest and public domain exports.
+2. `src/domain/plan.rs`
+   The `Plan` solution, list-variable hook wiring, and routing mode.
+3. `src/domain/delivery.rs` and `src/domain/vehicle.rs`
+   The problem fact and planning entity.
+4. `src/domain/route_metrics/`
+   Route preparation, SolverForge CVRP hooks, preview scoring, route geometry,
+   and insertion ranking.
+5. `src/constraints/mod.rs` and `src/constraints/*.rs`
+   The score model, one rule per file.
+6. `src/data/data_seed/entrypoints.rs`
+   Public demo-data IDs and generator dispatch.
+7. `src/data/data_seed/{philadelphia,hartford,firenze}/`
+   City depots and delivery coordinates.
+8. `src/solver/service.rs`
+   Retained-job orchestration over `SolverManager<Plan>`.
+9. `src/api/routes.rs`, `src/api/dto.rs`, and `src/api/sse.rs`
+   HTTP routes, transport DTOs, and live-event streaming.
+10. `static/app/main.mjs`, `static/app/models/`, and `static/app/ui/`
+    Browser controller, model normalization, maps, tables, and modals.
+
+## Project Shape
+
+- `src/domain/`
+  Planning model, domain types, route metrics, and model tests.
+- `src/constraints/`
+  Incremental SolverForge scoring rules.
+- `src/data/`
+  Deterministic city demo-data generators.
+- `src/solver/`
+  Retained-job facade and runtime event payload formatting.
+- `src/api/`
+  Axum routes, DTOs, errors, and SSE endpoint.
+- `static/app/`
+  Browser modules built on stock `solverforge-ui` assets.
+- `tests/api_contract/`
+  API integration coverage for catalog, jobs, lifecycle, SSE, and routes.
+- `tests/e2e/`
+  Playwright browser tests for the served app.

WIREFRAME.md

@@ -0,0 +1,241 @@
+# solverforge-deliveries WIREFRAME
+
+This file is the architectural map for the deliveries example.
+
+`README.md` explains how to run and use the app. This document explains how the
+pieces fit together and where each responsibility lives.
+
+## Documentation Roles
+
+- `README.md`
+  Quick start, dependency shape, route list, and user-facing orientation.
+- `WIREFRAME.md`
+  Architecture, execution flow, and file-map walkthrough.
+- `AGENTS.md`
+  Repo-specific contribution, validation, and documentation rules.
+- `Makefile`
+  Local development, validation, and Space/Docker command surface.
+- `Dockerfile`
+  Hugging Face Docker Space image definition.
+- `docs/screenshot.png`
+  Current browser screenshot embedded by the README.
+
+## What This Repo Is Teaching
+
+This repo is a complete `solverforge-deliveries` `1.0.1` list-variable
+SolverForge app for delivery routing.
+
+It shows how to combine:
+
+- a `Plan` solution with a list planning variable
+- route-specific score rules
+- SolverForge CVRP construction and local-search hooks
+- `solverforge-maps` road-network preparation and route geometry
+- retained jobs with snapshots, analysis, cancel, pause, resume, and SSE
+- a browser plan viewer built on stock `solverforge-ui` assets
+
+## SolverForge Concepts In Plain Language
+
+- `Delivery`
+  Input stop data. The solver assigns delivery IDs into vehicle routes.
+- `Vehicle`
+  Planning entity. Each vehicle owns one ordered `delivery_order` list.
+- `Plan`
+  Planning solution. It holds deliveries, vehicles, score, routing mode, view
+  state, and prepared routing data.
+- hard score
+  Missing assignments, capacity overage, late delivery seconds, and unreachable
+  route legs.
+- soft score
+  Total travel seconds.
+- retained job
+  A solve that lives in memory so the UI can stream events, fetch snapshots,
+  pause/resume, cancel, analyze, and delete terminal jobs.
+
+## Runtime Flow
+
+1. The browser loads `static/index.html`.
+2. `static/app/main.mjs` loads `static/sf-config.json`.
+3. The app fetches `/demo-data/PHILADELPHIA`.
+4. `PlanDto::from_plan()` serializes a refreshed transport plan with preview
+   state.
+5. The browser normalizes the plan, renders summary cards, tables, timelines,
+   and a map.
+6. When the user clicks Solve, the browser sends the current plan to
+   `POST /jobs`.
+7. `src/api/routes.rs` deserializes the `PlanDto`, rebuilds a `Plan`, and calls
+   `prepare_plan()`.
+8. `prepare_plan()` builds straight-line or road-network matrices and attaches
+   `PreparedVehicleRouting` to each vehicle.
+9. `SolverService` starts a retained solve through `SolverManager<Plan>`.
+10. Solver events are converted by `src/solver/service/runtime_payload.rs` into
+    UI-facing JSON.
+11. The browser consumes `/jobs/{id}/events` and fetches snapshots, analysis,
+    and route geometry for exact snapshot revisions.
+12. Road-network route geometry follows the `solverforge-maps` graph route,
+    projects each leg endpoint onto the nearest road segment, and stitches the
+    exact depot or delivery coordinate back in before encoding so each displayed
+    leg reaches the visible markers.
+
+## File Map
+
+```text
+.
+├── Cargo.toml
+│   Rust 1.95 crate metadata for app version 1.0.1 and registry dependency
+│   requests.
+├── solver.toml
+│   Embedded search policy for construction heuristics and local search.
+├── solverforge.app.toml
+│   App metadata, demo IDs, model facts/entities, registry dependency sources,
+│   and the `solverforge 0.13.1` runtime target.
+├── Makefile
+│   Hospital-style local build, validation, and Space/Docker commands.
+├── Dockerfile
+│   Multi-stage Rust 1.95 Docker image for Hugging Face Spaces.
+├── .dockerignore
+│   Keeps build artifacts, git metadata, route cache, and Playwright output out
+│   of the Docker context.
+├── README.md
+│   Run guide, dependency shape, API list, and learning path.
+├── AGENTS.md
+│   Repo-specific rules for future edits.
+├── WIREFRAME.md
+│   This architectural walkthrough.
+├── docs/screenshot.png
+│   Current browser screenshot used by the README.
+├── src/
+│   ├── domain/
+│   │   `planning_model!` manifest, `Plan`, entities, facts, preview structs,
+│   │   and route metrics.
+│   ├── constraints/
+│   │   Assignment, capacity, time-window, and travel-time score rules.
+│   ├── data/
+│   │   Deterministic city seed data and generator entrypoints.
+│   ├── solver/
+│   │   Retained-job service and runtime event payload formatting.
+│   └── api/
+│       Axum routes, DTOs, and SSE endpoint.
+├── static/
+│   ├── index.html
+│   ├── sf-config.json
+│   ├── generated/ui-model.json
+│   └── app/
+│       Browser controller, plan models, and UI renderers.
+└── tests/
+    ├── api_contract.rs
+    │   Single integration-test crate composed from `tests/api_contract/*.rs`.
+    ├── api_contract/
+    │   Catalog, job, lifecycle, SSE, and live-road modules.
+    ├── support/
+    │   Shared integration-test helpers used by that single crate.
+    ├── e2e/
+    │   Playwright browser tests for the served app.
+    └── frontend_models.test.mjs
+        Frontend model tests.
+```
+
+## Domain And Route Metrics
+
+`src/domain/plan.rs` stays small and macro-facing. It owns the `Plan` struct,
+normalization, list shadow refresh, transport refresh, and the
+`VrpSolution` implementation.
+
+Route-specific behavior lives under `src/domain/route_metrics/`:
+
+- `preparation.rs`
+  Builds matrices and per-vehicle prepared routing data.
+- `cvrp_hooks.rs`
+  Supplies Clarke-Wright, k-opt, load, capacity, and route replacement hooks.
+- `metrics.rs`
+  Computes per-vehicle route metrics.
+- `scoring.rs`
+  Builds preview DTOs and aggregate hard/soft score components.
+- `routes.rs`
+  Builds straight-line or road-network route geometry snapshots, including
+  edge-projected visual endpoints for road legs.
+- `insertions.rs`
+  Ranks candidate insertion positions for one delivery.
+- `types.rs`
+  Shared route metrics, snapshots, candidates, and routing trait types.
+
+This split keeps the public domain API stable while avoiding oversized files.
+
+## Demo Data
+
+`src/data/data_seed/entrypoints.rs` exposes three demo IDs:
+
+- `PHILADELPHIA`
+- `HARTFORD`
+- `FIRENZE`
+
+Each city has a small module with separate depot and grouped visit files. The
+generator is deterministic. Every demo has ten vehicle depots, enough scaled
+deliveries for those vehicles, reachable road-network coordinates, and enough
+aggregate capacity before route ordering.
+
+## API And Retained Runtime
+
+The REST API handles job control and snapshot reads:
+
+- `/jobs` creates a retained solver job.
+- `/jobs/{id}` and `/jobs/{id}/status` expose summary state.
+- `/jobs/{id}/snapshot` returns an exact or latest snapshot.
+- `/jobs/{id}/analysis` runs constraint analysis for a snapshot.
+- `/jobs/{id}/routes` returns route geometry for a snapshot.
+- `/jobs/{id}/events` streams typed lifecycle events.
+
+The insertion endpoint, `/recommendations/delivery-insertions`, is app-specific.
+It prepares the submitted plan, removes the requested delivery from any
+existing route, evaluates candidate insert positions, and returns preview plans.
+
+## Frontend Layout
+
+`static/app/main.mjs` is the controller. It owns current plan state, retained
+job state, route identity tracking, and event handlers.
+
+Supporting modules are split by responsibility:
+
+- `static/app/models/core.mjs`
+  Clone and normalize incoming plans.
+- `static/app/models/preview.mjs`
+  Draft straight-line preview scoring.
+- `static/app/models/timeline.mjs`
+  Vehicle and delivery rail models.
+- `static/app/models/formatters.mjs`
+  Labels, icons, tones, clocks, and durations.
+- `static/app/ui/layout.mjs`
+  Page shell and stock SolverForge UI component composition.
+- `static/app/ui/overview.mjs`
+  Summary, route list, vehicle-id keyed route highlighting, map, and timeline
+  rendering. The tutorial uses ten distinct map colors for its ten fixed
+  vehicles.
+- `static/app/ui/data-tables.mjs`
+  Read-only vehicle and delivery tables with delivery insertion recommendations.
+- `static/app/ui/modals.mjs`
+  Analysis and insertion recommendation bodies.
+- `static/app/ui/api-guide.mjs`
+  Visible API guide content.
+- `static/app/ui/lifecycle.mjs`
+  Dataset markers and route-identity helpers.
+
+## Validation Surfaces
+
+Use the Makefile as the repo-local workflow:
+
+- `make fmt-check`
+- `make clippy`
+- `make build-release`
+- `make test`
+- `make test-e2e`
+- `make space-build`
+- `make test-live-road`
+- `make ci-local`
+- `make pre-release`
+
+`make ci-local` includes the Docker image build used by the Hugging Face Space.
+The Playwright command uses the publication bundle's root Node dev dependency;
+runtime UI assets are served from the declared `solverforge-ui` Cargo crate.
+
+The file-size rule is part of the architecture: keep files below 300 lines and
+split by responsibility before they become broad catch-all modules.

solver.toml

@@ -0,0 +1,77 @@
+environment_mode = "reproducible"
+random_seed = 42
+
+[termination]
+seconds_spent_limit = 30
+unimproved_seconds_spent_limit = 5
+
+[[phases]]
+type = "construction_heuristic"
+construction_heuristic_type = "list_clarke_wright"
+entity_class = "Vehicle"
+variable_name = "delivery_order"
+
+[[phases]]
+type = "construction_heuristic"
+construction_heuristic_type = "list_k_opt"
+k = 2
+entity_class = "Vehicle"
+variable_name = "delivery_order"
+
+[[phases]]
+type = "local_search"
+
+[phases.acceptor]
+type = "late_acceptance"
+late_acceptance_size = 200
+
+[phases.forager]
+type = "accepted_count"
+limit = 4
+
+[phases.move_selector]
+type = "union_move_selector"
+
+[[phases.move_selector.selectors]]
+type = "nearby_list_change_move_selector"
+max_nearby = 20
+entity_class = "Vehicle"
+variable_name = "delivery_order"
+
+[[phases.move_selector.selectors]]
+type = "nearby_list_swap_move_selector"
+max_nearby = 20
+entity_class = "Vehicle"
+variable_name = "delivery_order"
+
+[[phases.move_selector.selectors]]
+type = "list_reverse_move_selector"
+entity_class = "Vehicle"
+variable_name = "delivery_order"
+
+[[phases.move_selector.selectors]]
+type = "k_opt_move_selector"
+k = 3
+min_segment_len = 1
+max_nearby = 10
+entity_class = "Vehicle"
+variable_name = "delivery_order"
+
+[[phases.move_selector.selectors]]
+type = "list_ruin_move_selector"
+min_ruin_count = 2
+max_ruin_count = 5
+moves_per_step = 10
+entity_class = "Vehicle"
+variable_name = "delivery_order"
+
+[[phases.move_selector.selectors]]
+type = "limited_neighborhood"
+selected_count_limit = 500
+
+[phases.move_selector.selectors.selector]
+type = "sublist_change_move_selector"
+min_sublist_size = 1
+max_sublist_size = 3
+entity_class = "Vehicle"
+variable_name = "delivery_order"

solverforge.app.toml

@@ -0,0 +1,62 @@
+[app]
+name = "solverforge-deliveries"
+starter = "neutral-shell"
+cli_version = "2.0.4"
+
+[runtime]
+target = "solverforge 0.13.1"
+runtime_source = "crates.io: solverforge 0.13.1"
+ui_source = "crates.io: solverforge-ui 0.6.5"
+maps_source = "crates.io: solverforge-maps 2.1.4"
+
+[demo]
+default_size = "PHILADELPHIA"
+available_sizes = [
+    "PHILADELPHIA",
+    "HARTFORD",
+    "FIRENZE",
+]
+
+[solution]
+name = "Plan"
+score = "HardSoftScore"
+
+[[facts]]
+name = "delivery"
+plural = "deliveries"
+kind = "problem_fact"
+
+[[entities]]
+name = "vehicle"
+plural = "vehicles"
+kind = "planning_entity"
+
+[[variables]]
+entity = "vehicle"
+entity_plural = "vehicles"
+field = "delivery_order"
+kind = "list"
+range = ""
+elements = "deliveries"
+allows_unassigned = false
+enabled = true
+
+[[constraints]]
+name = "all_deliveries_assigned"
+module = "all_deliveries_assigned"
+enabled = true
+
+[[constraints]]
+name = "delivery_time_windows"
+module = "delivery_time_windows"
+enabled = true
+
+[[constraints]]
+name = "total_travel_time"
+module = "total_travel_time"
+enabled = true
+
+[[constraints]]
+name = "vehicle_capacity"
+module = "vehicle_capacity"
+enabled = true

src/api/dto.rs

@@ -0,0 +1,242 @@
+//! Browser-facing JSON types for the deliveries API.
+//!
+//! The domain model contains SolverForge annotations and route-preparation
+//! caches. DTOs keep the transport contract plain: strings for scores,
+//! camelCase field names, and only data the browser can render or request
+//! again.
+
+use serde::{Deserialize, Serialize};
+use serde_json::{Map, Value};
+use solverforge::{HardSoftScore, SolverSnapshot, SolverSnapshotAnalysis, SolverStatus};
+
+use crate::domain::{DeliveryInsertionCandidate, Plan, RoutesSnapshot};
+
+mod runtime;
+
+pub use runtime::{lifecycle_state_label, terminal_reason_label, TelemetryDto};
+
+#[derive(Debug, Clone, Serialize, Deserialize)]
+#[serde(rename_all = "camelCase")]
+pub struct PlanDto {
+    /// Flattened domain fields let the browser reuse SolverForge's generic
+    /// model metadata while this app adds delivery-specific route previews.
+    #[serde(flatten)]
+    pub fields: Map<String, Value>,
+    #[serde(default)]
+    pub score: Option<String>,
+}
+
+#[derive(Debug, Clone, Serialize)]
+#[serde(rename_all = "camelCase")]
+pub struct ConstraintAnalysisDto {
+    pub name: String,
+    pub weight: String,
+    pub score: String,
+    pub match_count: usize,
+}
+
+#[derive(Debug, Clone, Serialize)]
+#[serde(rename_all = "camelCase")]
+pub struct AnalyzeResponse {
+    pub score: String,
+    pub constraints: Vec<ConstraintAnalysisDto>,
+}
+
+#[derive(Debug, Clone, Serialize)]
+#[serde(rename_all = "camelCase")]
+pub struct JobSummaryDto {
+    pub id: String,
+    pub job_id: String,
+    pub lifecycle_state: &'static str,
+    pub terminal_reason: Option<&'static str>,
+    pub checkpoint_available: bool,
+    pub event_sequence: u64,
+    pub snapshot_revision: Option<u64>,
+    pub current_score: Option<String>,
+    pub best_score: Option<String>,
+    pub telemetry: TelemetryDto,
+}
+
+#[derive(Debug, Clone, Serialize)]
+#[serde(rename_all = "camelCase")]
+pub struct JobSnapshotDto {
+    pub id: String,
+    pub job_id: String,
+    pub snapshot_revision: u64,
+    pub lifecycle_state: &'static str,
+    pub terminal_reason: Option<&'static str>,
+    pub current_score: Option<String>,
+    pub best_score: Option<String>,
+    pub telemetry: TelemetryDto,
+    pub solution: PlanDto,
+}
+
+#[derive(Debug, Clone, Serialize)]
+#[serde(rename_all = "camelCase")]
+pub struct JobAnalysisDto {
+    pub id: String,
+    pub job_id: String,
+    pub snapshot_revision: u64,
+    pub lifecycle_state: &'static str,
+    pub terminal_reason: Option<&'static str>,
+    pub analysis: AnalyzeResponse,
+}
+
+#[derive(Debug, Clone, Serialize)]
+#[serde(rename_all = "camelCase")]
+pub struct JobRoutesDto {
+    pub id: String,
+    pub job_id: String,
+    pub snapshot_revision: u64,
+    #[serde(flatten)]
+    pub routes: RoutesSnapshot,
+}
+
+#[derive(Debug, Clone, Deserialize)]
+#[serde(rename_all = "camelCase")]
+pub struct DeliveryInsertionRequestDto {
+    pub plan: PlanDto,
+    pub delivery_id: usize,
+    pub limit: Option<usize>,
+}
+
+#[derive(Debug, Clone, Serialize)]
+#[serde(rename_all = "camelCase")]
+pub struct DeliveryInsertionCandidateDto {
+    pub vehicle_id: usize,
+    pub vehicle_name: String,
+    pub insert_index: usize,
+    pub hard_score: i64,
+    pub soft_score: i64,
+    pub score: String,
+    pub delta_hard: i64,
+    pub delta_soft: i64,
+    pub preview_plan: PlanDto,
+}
+
+#[derive(Debug, Clone, Serialize)]
+#[serde(rename_all = "camelCase")]
+pub struct DeliveryInsertionResponseDto {
+    pub delivery_id: usize,
+    pub candidates: Vec<DeliveryInsertionCandidateDto>,
+}
+
+impl PlanDto {
+    /// Converts a domain plan into the browser JSON shape.
+    pub fn from_plan(plan: &Plan) -> Self {
+        let plan = plan.refreshed_for_transport();
+        let score = plan.score.as_ref().map(ToString::to_string);
+        let mut fields = match serde_json::to_value(plan).expect("failed to serialize plan") {
+            Value::Object(map) => map,
+            _ => Map::new(),
+        };
+        fields.remove("score");
+
+        Self { fields, score }
+    }
+
+    /// Rebuilds the SolverForge domain value from a browser request payload.
+    pub fn to_domain(&self) -> Result<Plan, serde_json::Error> {
+        let mut fields = self.fields.clone();
+        fields.insert("score".to_string(), Value::Null);
+        let mut plan: Plan = serde_json::from_value(Value::Object(fields))?;
+        plan.normalize();
+        Ok(plan)
+    }
+}
+
+impl JobSummaryDto {
+    pub fn from_status(job_id: usize, status: &SolverStatus<HardSoftScore>) -> Self {
+        Self {
+            id: job_id.to_string(),
+            job_id: job_id.to_string(),
+            lifecycle_state: lifecycle_state_label(status.lifecycle_state),
+            terminal_reason: status.terminal_reason.map(terminal_reason_label),
+            checkpoint_available: status.checkpoint_available,
+            event_sequence: status.event_sequence,
+            snapshot_revision: status.latest_snapshot_revision,
+            current_score: status.current_score.map(|score| score.to_string()),
+            best_score: status.best_score.map(|score| score.to_string()),
+            telemetry: TelemetryDto::from_runtime(&status.telemetry),
+        }
+    }
+}
+
+impl JobSnapshotDto {
+    pub fn from_snapshot(snapshot: &SolverSnapshot<Plan>) -> Self {
+        Self {
+            id: snapshot.job_id.to_string(),
+            job_id: snapshot.job_id.to_string(),
+            snapshot_revision: snapshot.snapshot_revision,
+            lifecycle_state: lifecycle_state_label(snapshot.lifecycle_state),
+            terminal_reason: snapshot.terminal_reason.map(terminal_reason_label),
+            current_score: snapshot.current_score.map(|score| score.to_string()),
+            best_score: snapshot.best_score.map(|score| score.to_string()),
+            telemetry: TelemetryDto::from_runtime(&snapshot.telemetry),
+            solution: PlanDto::from_plan(&snapshot.solution),
+        }
+    }
+}
+
+impl JobAnalysisDto {
+    pub fn from_snapshot_analysis(
+        snapshot: &SolverSnapshotAnalysis<HardSoftScore>,
+        analysis: AnalyzeResponse,
+    ) -> Self {
+        Self {
+            id: snapshot.job_id.to_string(),
+            job_id: snapshot.job_id.to_string(),
+            snapshot_revision: snapshot.snapshot_revision,
+            lifecycle_state: lifecycle_state_label(snapshot.lifecycle_state),
+            terminal_reason: snapshot.terminal_reason.map(terminal_reason_label),
+            analysis,
+        }
+    }
+}
+
+impl JobRoutesDto {
+    pub fn new(job_id: usize, snapshot_revision: u64, routes: RoutesSnapshot) -> Self {
+        Self {
+            id: job_id.to_string(),
+            job_id: job_id.to_string(),
+            snapshot_revision,
+            routes,
+        }
+    }
+}
+
+impl DeliveryInsertionCandidateDto {
+    /// Adds score strings to an insertion candidate returned by route metrics.
+    pub fn from_candidate(candidate: DeliveryInsertionCandidate) -> Self {
+        Self {
+            vehicle_id: candidate.vehicle_id,
+            vehicle_name: candidate.vehicle_name,
+            insert_index: candidate.insert_index,
+            hard_score: candidate.hard_score,
+            soft_score: candidate.soft_score,
+            score: HardSoftScore::of(candidate.hard_score, candidate.soft_score).to_string(),
+            delta_hard: candidate.delta_hard,
+            delta_soft: candidate.delta_soft,
+            preview_plan: PlanDto::from_plan(&candidate.preview_plan),
+        }
+    }
+}
+
+pub fn analysis_response(analysis: &solverforge::ScoreAnalysis<HardSoftScore>) -> AnalyzeResponse {
+    AnalyzeResponse {
+        score: analysis.score.to_string(),
+        constraints: analysis
+            .constraints
+            .iter()
+            .map(|constraint| ConstraintAnalysisDto {
+                name: constraint.name.clone(),
+                weight: constraint.weight.to_string(),
+                score: constraint.score.to_string(),
+                match_count: constraint.match_count,
+            })
+            .collect(),
+    }
+}
+
+#[cfg(test)]
+mod tests;

src/api/dto/runtime.rs

@@ -0,0 +1,83 @@
+use serde::Serialize;
+use solverforge::{SolverLifecycleState, SolverTelemetry, SolverTerminalReason};
+use std::time::Duration;
+
+#[derive(Debug, Clone, Copy, Serialize)]
+#[serde(rename_all = "camelCase")]
+pub struct TelemetryDto {
+    pub elapsed_ms: u64,
+    pub step_count: u64,
+    pub moves_generated: u64,
+    pub moves_evaluated: u64,
+    pub moves_accepted: u64,
+    pub score_calculations: u64,
+    pub generation_ms: u64,
+    pub evaluation_ms: u64,
+    pub moves_per_second: u64,
+    pub acceptance_rate: f64,
+}
+
+impl TelemetryDto {
+    pub fn from_runtime(telemetry: &SolverTelemetry) -> Self {
+        Self {
+            elapsed_ms: duration_to_millis(telemetry.elapsed),
+            step_count: telemetry.step_count,
+            moves_generated: telemetry.moves_generated,
+            moves_evaluated: telemetry.moves_evaluated,
+            moves_accepted: telemetry.moves_accepted,
+            score_calculations: telemetry.score_calculations,
+            generation_ms: duration_to_millis(telemetry.generation_time),
+            evaluation_ms: duration_to_millis(telemetry.evaluation_time),
+            moves_per_second: whole_units_per_second(telemetry.moves_evaluated, telemetry.elapsed),
+            acceptance_rate: derive_acceptance_rate(
+                telemetry.moves_accepted,
+                telemetry.moves_evaluated,
+            ),
+        }
+    }
+}
+
+pub fn lifecycle_state_label(state: SolverLifecycleState) -> &'static str {
+    match state {
+        SolverLifecycleState::Solving => "SOLVING",
+        SolverLifecycleState::PauseRequested => "PAUSE_REQUESTED",
+        SolverLifecycleState::Paused => "PAUSED",
+        SolverLifecycleState::Completed => "COMPLETED",
+        SolverLifecycleState::Cancelled => "CANCELLED",
+        SolverLifecycleState::Failed => "FAILED",
+    }
+}
+
+pub fn terminal_reason_label(reason: SolverTerminalReason) -> &'static str {
+    match reason {
+        SolverTerminalReason::Completed => "completed",
+        SolverTerminalReason::TerminatedByConfig => "terminated_by_config",
+        SolverTerminalReason::Cancelled => "cancelled",
+        SolverTerminalReason::Failed => "failed",
+    }
+}
+
+fn duration_to_millis(duration: Duration) -> u64 {
+    duration.as_millis().min(u128::from(u64::MAX)) as u64
+}
+
+fn whole_units_per_second(count: u64, elapsed: Duration) -> u64 {
+    let nanos = elapsed.as_nanos();
+    if nanos == 0 {
+        0
+    } else {
+        let per_second = u128::from(count)
+            .saturating_mul(1_000_000_000)
+            .checked_div(nanos)
+            .unwrap_or(0);
+        per_second.min(u128::from(u64::MAX)) as u64
+    }
+}
+
+fn derive_acceptance_rate(moves_accepted: u64, moves_evaluated: u64) -> f64 {
+    if moves_evaluated == 0 {
+        0.0
+    } else {
+        moves_accepted as f64 / moves_evaluated as f64
+    }
+}

src/api/dto/tests.rs

@@ -0,0 +1,38 @@
+use super::*;
+
+#[test]
+fn plan_dto_serializes_hard_soft_score_as_display_string() {
+    let mut plan = Plan::new("score check", Vec::new(), Vec::new());
+    plan.score = Some(HardSoftScore::of(0, -335));
+
+    let dto = PlanDto::from_plan(&plan);
+    assert_eq!(dto.score.as_deref(), Some("0hard/-335soft"));
+
+    let value = serde_json::to_value(&dto).expect("dto should serialize");
+    assert_eq!(value["score"], Value::String("0hard/-335soft".to_string()));
+    assert!(
+        !value["score"].is_object(),
+        "score must not serialize as a JSON object"
+    );
+}
+
+#[test]
+fn plan_dto_ignores_inbound_score() {
+    let mut fields = Map::new();
+    fields.insert("name".to_string(), Value::String("spoofed".to_string()));
+    fields.insert(
+        "routingMode".to_string(),
+        Value::String("straight_line".to_string()),
+    );
+    fields.insert("viewState".to_string(), Value::Object(Map::new()));
+    fields.insert("deliveries".to_string(), Value::Array(Vec::new()));
+    fields.insert("vehicles".to_string(), Value::Array(Vec::new()));
+
+    let dto = PlanDto {
+        fields,
+        score: Some("0hard/-335soft".to_string()),
+    };
+    let plan = dto.to_domain().expect("dto should deserialize");
+
+    assert_eq!(plan.score, None);
+}

src/api/errors.rs

@@ -0,0 +1,35 @@
+//! Shared HTTP error mapping for runtime and routing failures.
+//!
+//! Keeping this out of `routes.rs` lets the handler file read as a tutorial
+//! walkthrough of the public API instead of as a collection of mapping helpers.
+
+use axum::http::StatusCode;
+
+/// Parses the path segment used by stock retained-job routes.
+pub(super) fn parse_job_id(id: &str) -> Result<usize, StatusCode> {
+    id.parse::<usize>().map_err(|_| StatusCode::NOT_FOUND)
+}
+
+/// Maps retained-runtime errors onto HTTP statuses the stock UI understands.
+pub(super) fn status_from_solver_error(error: solverforge::SolverManagerError) -> StatusCode {
+    match error {
+        solverforge::SolverManagerError::NoFreeJobSlots => StatusCode::SERVICE_UNAVAILABLE,
+        solverforge::SolverManagerError::JobNotFound { .. } => StatusCode::NOT_FOUND,
+        solverforge::SolverManagerError::InvalidStateTransition { .. } => StatusCode::CONFLICT,
+        solverforge::SolverManagerError::NoSnapshotAvailable { .. } => StatusCode::CONFLICT,
+        solverforge::SolverManagerError::SnapshotNotFound { .. } => StatusCode::NOT_FOUND,
+    }
+}
+
+/// Maps map/routing preparation errors onto client-facing route statuses.
+pub(super) fn status_from_routing_error(error: solverforge_maps::RoutingError) -> StatusCode {
+    match error {
+        solverforge_maps::RoutingError::InvalidCoordinate { .. } => StatusCode::BAD_REQUEST,
+        solverforge_maps::RoutingError::Cancelled => StatusCode::REQUEST_TIMEOUT,
+        solverforge_maps::RoutingError::Network(_)
+        | solverforge_maps::RoutingError::Parse(_)
+        | solverforge_maps::RoutingError::Io(_)
+        | solverforge_maps::RoutingError::SnapFailed { .. }
+        | solverforge_maps::RoutingError::NoPath { .. } => StatusCode::BAD_GATEWAY,
+    }
+}

src/api/mod.rs

@@ -0,0 +1,12 @@
+//! HTTP transport surface for the deliveries tutorial.
+//!
+//! The API layer stays intentionally thin: routes decode requests, DTOs define
+//! the browser-visible JSON contract, and `SolverService` owns retained jobs.
+
+mod dto;
+mod errors;
+mod routes;
+mod sse;
+
+pub use dto::PlanDto;
+pub use routes::{router, AppState};

src/api/routes.rs

@@ -0,0 +1,288 @@
+//! HTTP routes for the deliveries tutorial app.
+//!
+//! Each handler follows the same beginner-friendly shape:
+//! decode request -> prepare the domain model if needed -> call the retained
+//! solver facade -> encode a DTO for the browser.
+
+use axum::{
+    extract::{Path, Query, State},
+    http::StatusCode,
+    routing::{get, post},
+    Json, Router,
+};
+use serde::{Deserialize, Serialize};
+use std::sync::Arc;
+
+use super::dto::{
+    analysis_response, DeliveryInsertionCandidateDto, DeliveryInsertionRequestDto,
+    DeliveryInsertionResponseDto, JobAnalysisDto, JobRoutesDto, JobSnapshotDto, JobSummaryDto,
+    PlanDto,
+};
+use super::errors::{parse_job_id, status_from_routing_error, status_from_solver_error};
+use super::sse;
+use crate::data::{generate, DemoData};
+use crate::domain::{build_routes_snapshot, prepare_plan, rank_delivery_insertions};
+use crate::solver::SolverService;
+
+/// Shared application state stored once inside Axum.
+pub struct AppState {
+    pub solver: SolverService,
+}
+
+impl AppState {
+    pub fn new() -> Self {
+        Self {
+            solver: SolverService::new(),
+        }
+    }
+}
+
+impl Default for AppState {
+    fn default() -> Self {
+        Self::new()
+    }
+}
+
+/// Registers the public HTTP surface used by the browser and tests.
+pub fn router(state: Arc<AppState>) -> Router {
+    Router::new()
+        .route("/health", get(health))
+        .route("/info", get(info))
+        .route("/demo-data", get(list_demo_data))
+        .route("/demo-data/{id}", get(get_demo_data))
+        .route("/jobs", post(create_job))
+        .route("/jobs/{id}", get(get_job).delete(delete_job))
+        .route("/jobs/{id}/status", get(get_job_status))
+        .route("/jobs/{id}/snapshot", get(get_snapshot))
+        .route("/jobs/{id}/analysis", get(analyze_by_id))
+        .route("/jobs/{id}/routes", get(get_routes))
+        .route("/jobs/{id}/pause", post(pause_job))
+        .route("/jobs/{id}/resume", post(resume_job))
+        .route("/jobs/{id}/cancel", post(cancel_job))
+        .route("/jobs/{id}/events", get(sse::events))
+        .route(
+            "/recommendations/delivery-insertions",
+            post(recommend_delivery_insertions),
+        )
+        .with_state(state)
+}
+
+#[derive(Serialize)]
+struct HealthResponse {
+    status: &'static str,
+}
+
+async fn health() -> Json<HealthResponse> {
+    Json(HealthResponse { status: "UP" })
+}
+
+#[derive(Serialize)]
+#[serde(rename_all = "camelCase")]
+struct InfoResponse {
+    name: &'static str,
+    version: &'static str,
+    solver_engine: &'static str,
+}
+
+async fn info() -> Json<InfoResponse> {
+    Json(InfoResponse {
+        name: "SolverForge Deliveries",
+        version: env!("CARGO_PKG_VERSION"),
+        solver_engine: "SolverForge",
+    })
+}
+
+/// Lists the deterministic demo datasets accepted by `/demo-data/{id}`.
+async fn list_demo_data() -> Json<Vec<&'static str>> {
+    Json(vec![
+        DemoData::Philadelphia.id(),
+        DemoData::Hartford.id(),
+        DemoData::Firenze.id(),
+    ])
+}
+
+/// Materializes one demo plan and sends it through the same DTO as snapshots.
+async fn get_demo_data(Path(id): Path<String>) -> Result<Json<PlanDto>, StatusCode> {
+    let demo = id.parse::<DemoData>().map_err(|_| StatusCode::NOT_FOUND)?;
+    let plan = generate(demo);
+    Ok(Json(PlanDto::from_plan(&plan)))
+}
+
+#[derive(Serialize)]
+#[serde(rename_all = "camelCase")]
+struct CreateJobResponse {
+    id: String,
+}
+
+async fn create_job(
+    State(state): State<Arc<AppState>>,
+    Json(dto): Json<PlanDto>,
+) -> Result<Json<CreateJobResponse>, StatusCode> {
+    let mut plan = dto.to_domain().map_err(|_| StatusCode::BAD_REQUEST)?;
+    // Route matrices and shadow variables must be ready before SolverForge
+    // starts construction, because the list-variable hooks read them directly.
+    prepare_plan(&mut plan)
+        .await
+        .map_err(status_from_routing_error)?;
+    let id = state
+        .solver
+        .start_job(plan)
+        .map_err(status_from_solver_error)?;
+    Ok(Json(CreateJobResponse { id }))
+}
+
+/// Returns the retained-job summary without requiring a snapshot payload.
+async fn get_job(
+    State(state): State<Arc<AppState>>,
+    Path(id): Path<String>,
+) -> Result<Json<JobSummaryDto>, StatusCode> {
+    let job_id = parse_job_id(&id)?;
+    let status = state
+        .solver
+        .get_status(&id)
+        .map_err(status_from_solver_error)?;
+    Ok(Json(JobSummaryDto::from_status(job_id, &status)))
+}
+
+/// Stock alias used by the shared SolverForge UI job-status helpers.
+async fn get_job_status(
+    State(state): State<Arc<AppState>>,
+    Path(id): Path<String>,
+) -> Result<Json<JobSummaryDto>, StatusCode> {
+    get_job(State(state), Path(id)).await
+}
+
+#[derive(Debug, Default, Deserialize)]
+struct SnapshotQuery {
+    snapshot_revision: Option<u64>,
+}
+
+async fn get_snapshot(
+    State(state): State<Arc<AppState>>,
+    Path(id): Path<String>,
+    Query(query): Query<SnapshotQuery>,
+) -> Result<Json<JobSnapshotDto>, StatusCode> {
+    let snapshot = state
+        .solver
+        .get_snapshot(&id, query.snapshot_revision)
+        .map_err(status_from_solver_error)?;
+    Ok(Json(JobSnapshotDto::from_snapshot(&snapshot)))
+}
+
+/// Runs exact score analysis against a retained snapshot revision.
+async fn analyze_by_id(
+    State(state): State<Arc<AppState>>,
+    Path(id): Path<String>,
+    Query(query): Query<SnapshotQuery>,
+) -> Result<Json<JobAnalysisDto>, StatusCode> {
+    let snapshot_analysis = state
+        .solver
+        .analyze_snapshot(&id, query.snapshot_revision)
+        .map_err(status_from_solver_error)?;
+    let analysis = analysis_response(&snapshot_analysis.analysis);
+    Ok(Json(JobAnalysisDto::from_snapshot_analysis(
+        &snapshot_analysis,
+        analysis,
+    )))
+}
+
+/// Builds route geometry for the exact retained snapshot the browser is viewing.
+async fn get_routes(
+    State(state): State<Arc<AppState>>,
+    Path(id): Path<String>,
+    Query(query): Query<SnapshotQuery>,
+) -> Result<Json<JobRoutesDto>, StatusCode> {
+    let job_id = parse_job_id(&id)?;
+    let mut snapshot = state
+        .solver
+        .get_snapshot(&id, query.snapshot_revision)
+        .map_err(status_from_solver_error)?;
+    if snapshot
+        .solution
+        .vehicles
+        .iter()
+        .any(|vehicle| vehicle.prepared_routing.is_none())
+    {
+        // Older snapshots can be reconstructed from transport data. If the
+        // transient routing cache is absent, rebuild it before drawing routes.
+        prepare_plan(&mut snapshot.solution)
+            .await
+            .map_err(status_from_routing_error)?;
+    }
+    let routes = build_routes_snapshot(&snapshot.solution)
+        .await
+        .map_err(status_from_routing_error)?;
+    Ok(Json(JobRoutesDto::new(
+        job_id,
+        snapshot.snapshot_revision,
+        routes,
+    )))
+}
+
+/// Requests a runtime-managed pause at the next safe solver point.
+async fn pause_job(
+    State(state): State<Arc<AppState>>,
+    Path(id): Path<String>,
+) -> Result<StatusCode, StatusCode> {
+    state.solver.pause(&id).map_err(status_from_solver_error)?;
+    Ok(StatusCode::ACCEPTED)
+}
+
+/// Resumes a paused retained job.
+async fn resume_job(
+    State(state): State<Arc<AppState>>,
+    Path(id): Path<String>,
+) -> Result<StatusCode, StatusCode> {
+    state.solver.resume(&id).map_err(status_from_solver_error)?;
+    Ok(StatusCode::ACCEPTED)
+}
+
+/// Cancels a live or paused retained job without deleting its final snapshot.
+async fn cancel_job(
+    State(state): State<Arc<AppState>>,
+    Path(id): Path<String>,
+) -> Result<StatusCode, StatusCode> {
+    state.solver.cancel(&id).map_err(status_from_solver_error)?;
+    Ok(StatusCode::ACCEPTED)
+}
+
+/// Deletes a terminal retained job and its cached SSE bootstrap state.
+async fn delete_job(
+    State(state): State<Arc<AppState>>,
+    Path(id): Path<String>,
+) -> Result<StatusCode, StatusCode> {
+    state.solver.delete(&id).map_err(status_from_solver_error)?;
+    Ok(StatusCode::NO_CONTENT)
+}
+
+/// Ranks candidate vehicle/position insertions for one delivery.
+async fn recommend_delivery_insertions(
+    Json(request): Json<DeliveryInsertionRequestDto>,
+) -> Result<Json<DeliveryInsertionResponseDto>, StatusCode> {
+    let mut plan = request
+        .plan
+        .to_domain()
+        .map_err(|_| StatusCode::BAD_REQUEST)?;
+    if request.delivery_id >= plan.deliveries.len() {
+        return Err(StatusCode::BAD_REQUEST);
+    }
+    // Candidate scoring uses the same prepared data as real solving so the
+    // modal preview matches the constraints and route metrics.
+    prepare_plan(&mut plan)
+        .await
+        .map_err(status_from_routing_error)?;
+    let candidates = rank_delivery_insertions(
+        &plan,
+        request.delivery_id,
+        request.limit.unwrap_or(8).min(24),
+    )
+    .await
+    .map_err(status_from_routing_error)?
+    .into_iter()
+    .map(DeliveryInsertionCandidateDto::from_candidate)
+    .collect();
+    Ok(Json(DeliveryInsertionResponseDto {
+        delivery_id: request.delivery_id,
+        candidates,
+    }))
+}

src/api/sse.rs

@@ -0,0 +1,50 @@
+//! Server-sent events for retained delivery solve jobs.
+//!
+//! A browser may connect after a job has already started. The stream therefore
+//! sends one bootstrap status first, then forwards live events from the
+//! retained job broadcaster.
+
+use axum::{
+    body::Body,
+    extract::{Path, State},
+    http::{header, StatusCode},
+    response::Response,
+};
+use std::sync::Arc;
+use tokio_stream::wrappers::BroadcastStream;
+use tokio_stream::StreamExt;
+
+use super::routes::AppState;
+
+pub async fn events(
+    State(state): State<Arc<AppState>>,
+    Path(id): Path<String>,
+) -> Result<Response<Body>, StatusCode> {
+    let rx = state.solver.subscribe(&id).ok_or(StatusCode::NOT_FOUND)?;
+    let bootstrap_json = state
+        .solver
+        .bootstrap_event(&id)
+        .map_err(|_| StatusCode::NOT_FOUND)?;
+    let bootstrap = tokio_stream::iter(std::iter::once(Ok::<_, std::convert::Infallible>(
+        format!("data: {}\n\n", bootstrap_json).into_bytes(),
+    )));
+
+    let live = BroadcastStream::new(rx).filter_map(|msg| match msg {
+        Ok(json) => Some(Ok::<_, std::convert::Infallible>(
+            format!("data: {}\n\n", json).into_bytes(),
+        )),
+        // Broadcast channels can report that a slow browser missed events. The
+        // next retained snapshot/status request is still authoritative, so the
+        // stream drops that gap instead of failing the connection.
+        Err(_) => None,
+    });
+
+    let stream = bootstrap.chain(live);
+
+    Ok(Response::builder()
+        .header(header::CONTENT_TYPE, "text/event-stream")
+        .header(header::CACHE_CONTROL, "no-cache")
+        .header("X-Accel-Buffering", "no")
+        .body(Body::from_stream(stream))
+        .unwrap())
+}

src/constraints/all_deliveries_assigned.rs

@@ -0,0 +1,28 @@
+use crate::domain::{
+    Delivery, Plan, PlanConstraintStreams, Vehicle, UNASSIGNED_DELIVERY_HARD_PENALTY,
+};
+use solverforge::prelude::*;
+use solverforge::stream::joiner::equal_bi;
+use solverforge::IncrementalConstraint;
+
+/// HARD: every delivery must appear in some vehicle route.
+pub fn constraint() -> impl IncrementalConstraint<Plan, HardSoftScore> {
+    ConstraintFactory::<Plan, HardSoftScore>::new()
+        .deliveries()
+        // The right side flattens every vehicle route into assigned delivery
+        // ids. A delivery that does not exist in that flattened stream is
+        // unassigned and receives the dominant hard penalty.
+        .if_not_exists((
+            ConstraintFactory::<Plan, HardSoftScore>::new()
+                .vehicles()
+                .flattened(|vehicle: &Vehicle| &vehicle.delivery_order),
+            equal_bi(
+                |delivery: &Delivery| delivery.id,
+                |assigned: &usize| *assigned,
+            ),
+        ))
+        .penalize(hard_weight(|_: &Delivery| {
+            HardSoftScore::of(UNASSIGNED_DELIVERY_HARD_PENALTY, 0)
+        }))
+        .named("All Deliveries Assigned")
+}

src/constraints/delivery_time_windows.rs

@@ -0,0 +1,16 @@
+use crate::domain::{Plan, PlanConstraintStreams, Vehicle};
+use solverforge::prelude::*;
+use solverforge::IncrementalConstraint;
+
+/// HARD: each vehicle route must respect delivery time windows.
+pub fn constraint() -> impl IncrementalConstraint<Plan, HardSoftScore> {
+    ConstraintFactory::<Plan, HardSoftScore>::new()
+        .vehicles()
+        // Time-window work is precomputed as a vehicle shadow value, so this
+        // rule can stay incremental and read one scalar per changed route.
+        .filter(|vehicle: &Vehicle| vehicle.time_window_violation_seconds() > 0)
+        .penalize(hard_weight(|vehicle: &Vehicle| {
+            HardSoftScore::of(vehicle.time_window_violation_seconds(), 0)
+        }))
+        .named("Delivery Time Windows")
+}

src/constraints/mod.rs

@@ -0,0 +1,32 @@
+//! Constraint assembly for delivery routing.
+//!
+//! Each sibling file contributes one named rule. `create_constraints()` lists
+//! them in the order we want beginners to see in score analysis output.
+
+use crate::domain::Plan;
+use solverforge::prelude::*;
+
+pub use self::assemble::create_constraints;
+
+// @solverforge:begin constraint-modules
+mod all_deliveries_assigned;
+mod delivery_time_windows;
+mod total_travel_time;
+mod vehicle_capacity;
+// @solverforge:end constraint-modules
+
+mod assemble {
+    use super::*;
+
+    /// Collects the full scoring model used by `Plan`.
+    pub fn create_constraints() -> impl ConstraintSet<Plan, HardSoftScore> {
+        // @solverforge:begin constraint-calls
+        (
+            all_deliveries_assigned::constraint(),
+            vehicle_capacity::constraint(),
+            delivery_time_windows::constraint(),
+            total_travel_time::constraint(),
+        )
+        // @solverforge:end constraint-calls
+    }
+}

src/constraints/total_travel_time.rs

@@ -0,0 +1,11 @@
+use crate::domain::{Plan, PlanConstraintStreams, Vehicle};
+use solverforge::prelude::*;
+use solverforge::IncrementalConstraint;
+
+/// SOFT: prefer less total travel time across all routes.
+pub fn constraint() -> impl IncrementalConstraint<Plan, HardSoftScore> {
+    ConstraintFactory::<Plan, HardSoftScore>::new()
+        .vehicles()
+        .penalize(|vehicle: &Vehicle| HardSoftScore::of(0, vehicle.total_travel_seconds()))
+        .named("Total Travel Time")
+}

src/constraints/vehicle_capacity.rs

@@ -0,0 +1,16 @@
+use crate::domain::{Plan, PlanConstraintStreams, Vehicle};
+use solverforge::prelude::*;
+use solverforge::IncrementalConstraint;
+
+/// HARD: a vehicle's assigned demand cannot exceed its capacity.
+pub fn constraint() -> impl IncrementalConstraint<Plan, HardSoftScore> {
+    ConstraintFactory::<Plan, HardSoftScore>::new()
+        .vehicles()
+        // Capacity overage is also a route shadow value. SolverForge updates it
+        // after list moves, and this constraint only scores positive excess.
+        .filter(|vehicle: &Vehicle| vehicle.capacity_overage() > 0)
+        .penalize(hard_weight(|vehicle: &Vehicle| {
+            HardSoftScore::of(vehicle.capacity_overage(), 0)
+        }))
+        .named("Vehicle Capacity")
+}

src/data/data_seed.rs

@@ -0,0 +1,16 @@
+//! Deterministic delivery demo-data modules.
+//!
+//! `entrypoints` owns the public dataset ids, while each city module owns its
+//! depots and stops. The solver receives ordinary `Plan` values; there is no
+//! hidden runtime data source behind these seeds.
+
+mod entrypoints;
+mod firenze;
+mod hartford;
+mod philadelphia;
+mod types;
+
+pub use entrypoints::{generate, DemoData};
+
+#[cfg(test)]
+mod tests;

src/data/data_seed/entrypoints.rs

@@ -0,0 +1,134 @@
+//! Public dataset ids and generator dispatch for delivery demos.
+//!
+//! City-specific modules only contain depots and visit groups. This file turns
+//! those static fixtures into normalized `Plan` values with vehicles, delivery
+//! ids, routing mode, and deterministic service windows.
+
+use std::str::FromStr;
+
+use rand::rngs::StdRng;
+use rand::{RngExt, SeedableRng};
+
+use super::types::{LocationData, VEHICLE_NAMES};
+use super::{firenze, hartford, philadelphia};
+use crate::domain::{Delivery, Plan, RoutingMode, Vehicle};
+
+#[derive(Debug, Clone, Copy)]
+pub enum DemoData {
+    Philadelphia,
+    Hartford,
+    Firenze,
+}
+
+impl DemoData {
+    pub fn id(self) -> &'static str {
+        match self {
+            DemoData::Philadelphia => "PHILADELPHIA",
+            DemoData::Hartford => "HARTFORD",
+            DemoData::Firenze => "FIRENZE",
+        }
+    }
+
+    pub fn label(self) -> &'static str {
+        match self {
+            DemoData::Philadelphia => "Philadelphia",
+            DemoData::Hartford => "Hartford",
+            DemoData::Firenze => "Firenze",
+        }
+    }
+}
+
+impl FromStr for DemoData {
+    type Err = ();
+
+    fn from_str(s: &str) -> Result<Self, Self::Err> {
+        match s.trim().to_uppercase().as_str() {
+            "PHILADELPHIA" => Ok(DemoData::Philadelphia),
+            "HARTFORD" => Ok(DemoData::Hartford),
+            "FIRENZE" => Ok(DemoData::Firenze),
+            _ => Err(()),
+        }
+    }
+}
+
+pub fn generate(demo: DemoData) -> Plan {
+    match demo {
+        DemoData::Philadelphia => generate_demo_data(
+            demo,
+            0,
+            philadelphia::DEPOTS,
+            philadelphia::VISIT_GROUPS,
+            6 * 3600,
+            36,
+            48,
+        ),
+        DemoData::Hartford => generate_demo_data(
+            demo,
+            1,
+            hartford::DEPOTS,
+            hartford::VISIT_GROUPS,
+            6 * 3600,
+            24,
+            34,
+        ),
+        DemoData::Firenze => generate_demo_data(
+            demo,
+            2,
+            firenze::DEPOTS,
+            firenze::VISIT_GROUPS,
+            6 * 3600,
+            38,
+            52,
+        ),
+    }
+}
+
+/// Builds one city plan from static stops and deterministic vehicle settings.
+fn generate_demo_data(
+    demo: DemoData,
+    seed: u64,
+    depots: &[LocationData],
+    stop_groups: &[&[LocationData]],
+    departure_time: i64,
+    min_capacity: i32,
+    max_capacity: i32,
+) -> Plan {
+    let mut rng = StdRng::seed_from_u64(seed);
+    let vehicles = depots
+        .iter()
+        .enumerate()
+        .map(|(idx, depot)| {
+            Vehicle::new(
+                idx,
+                VEHICLE_NAMES[idx % VEHICLE_NAMES.len()],
+                rng.random_range(min_capacity..=max_capacity),
+                depot.lat,
+                depot.lng,
+                departure_time,
+            )
+        })
+        .collect::<Vec<_>>();
+
+    let deliveries = stop_groups
+        .iter()
+        .flat_map(|stops| stops.iter())
+        .enumerate()
+        .map(|(idx, location)| {
+            let (kind, min_start_time, max_end_time, demand_range, service_range) =
+                location.customer_type.profile();
+            Delivery::new(
+                idx,
+                location.name,
+                kind,
+                (location.lat, location.lng),
+                rng.random_range(demand_range.0..=demand_range.1),
+                (min_start_time, max_end_time),
+                rng.random_range(service_range.0..=service_range.1),
+            )
+        })
+        .collect::<Vec<_>>();
+
+    let mut plan = Plan::new(demo.label(), deliveries, vehicles);
+    plan.routing_mode = RoutingMode::RoadNetwork;
+    plan
+}

src/data/data_seed/firenze.rs

@@ -0,0 +1,8 @@
+use super::types::LocationData;
+
+mod depots;
+mod visits;
+mod visits_extra;
+
+pub(super) use depots::DEPOTS;
+pub(super) const VISIT_GROUPS: &[&[LocationData]] = &[visits::VISITS, visits_extra::VISITS];

src/data/data_seed/firenze/depots.rs

@@ -0,0 +1,64 @@
+use super::super::types::{CustomerType, LocationData};
+
+pub(in crate::data::data_seed) const DEPOTS: &[LocationData] = &[
+    LocationData {
+        name: "Centro Storico Depot",
+        lat: 43.7696,
+        lng: 11.2558,
+        customer_type: CustomerType::Business,
+    },
+    LocationData {
+        name: "Santa Maria Novella Depot",
+        lat: 43.7745,
+        lng: 11.2487,
+        customer_type: CustomerType::Business,
+    },
+    LocationData {
+        name: "Campo di Marte Depot",
+        lat: 43.7820,
+        lng: 11.2820,
+        customer_type: CustomerType::Business,
+    },
+    LocationData {
+        name: "Rifredi Depot",
+        lat: 43.7950,
+        lng: 11.2410,
+        customer_type: CustomerType::Business,
+    },
+    LocationData {
+        name: "Novoli Depot",
+        lat: 43.7880,
+        lng: 11.2220,
+        customer_type: CustomerType::Business,
+    },
+    LocationData {
+        name: "Gavinana Depot",
+        lat: 43.7520,
+        lng: 11.2680,
+        customer_type: CustomerType::Business,
+    },
+    LocationData {
+        name: "Mercato Centrale Depot",
+        lat: 43.7762,
+        lng: 11.2540,
+        customer_type: CustomerType::Business,
+    },
+    LocationData {
+        name: "Santa Croce Depot",
+        lat: 43.7688,
+        lng: 11.2620,
+        customer_type: CustomerType::Business,
+    },
+    LocationData {
+        name: "Santo Spirito Depot",
+        lat: 43.7665,
+        lng: 11.2470,
+        customer_type: CustomerType::Business,
+    },
+    LocationData {
+        name: "Careggi Depot",
+        lat: 43.8020,
+        lng: 11.2530,
+        customer_type: CustomerType::Business,
+    },
+];

src/data/data_seed/firenze/visits.rs

@@ -0,0 +1,292 @@
+use super::super::types::{CustomerType, LocationData};
+
+pub(in crate::data::data_seed) const VISITS: &[LocationData] = &[
+    LocationData {
+        name: "Trattoria Mario",
+        lat: 43.7762,
+        lng: 11.2540,
+        customer_type: CustomerType::Restaurant,
+    },
+    LocationData {
+        name: "Buca Mario",
+        lat: 43.7698,
+        lng: 11.2505,
+        customer_type: CustomerType::Restaurant,
+    },
+    LocationData {
+        name: "Il Latini",
+        lat: 43.7705,
+        lng: 11.2495,
+        customer_type: CustomerType::Restaurant,
+    },
+    LocationData {
+        name: "Osteria dell'Enoteca",
+        lat: 43.7680,
+        lng: 11.2545,
+        customer_type: CustomerType::Restaurant,
+    },
+    LocationData {
+        name: "Trattoria Sostanza",
+        lat: 43.7735,
+        lng: 11.2470,
+        customer_type: CustomerType::Restaurant,
+    },
+    LocationData {
+        name: "All'Antico Vinaio",
+        lat: 43.7690,
+        lng: 11.2570,
+        customer_type: CustomerType::Restaurant,
+    },
+    LocationData {
+        name: "Mercato Centrale",
+        lat: 43.7762,
+        lng: 11.2540,
+        customer_type: CustomerType::Restaurant,
+    },
+    LocationData {
+        name: "Cibreo",
+        lat: 43.7702,
+        lng: 11.2670,
+        customer_type: CustomerType::Restaurant,
+    },
+    LocationData {
+        name: "Ora d'Aria",
+        lat: 43.7710,
+        lng: 11.2610,
+        customer_type: CustomerType::Restaurant,
+    },
+    LocationData {
+        name: "Buca Lapi",
+        lat: 43.7720,
+        lng: 11.2535,
+        customer_type: CustomerType::Restaurant,
+    },
+    LocationData {
+        name: "Il Palagio",
+        lat: 43.7680,
+        lng: 11.2550,
+        customer_type: CustomerType::Restaurant,
+    },
+    LocationData {
+        name: "Enoteca Pinchiorri",
+        lat: 43.7695,
+        lng: 11.2620,
+        customer_type: CustomerType::Restaurant,
+    },
+    LocationData {
+        name: "La Giostra",
+        lat: 43.7745,
+        lng: 11.2650,
+        customer_type: CustomerType::Restaurant,
+    },
+    LocationData {
+        name: "Fishing Lab",
+        lat: 43.7693,
+        lng: 11.2563,
+        customer_type: CustomerType::Restaurant,
+    },
+    LocationData {
+        name: "Trattoria Cammillo",
+        lat: 43.7665,
+        lng: 11.2520,
+        customer_type: CustomerType::Restaurant,
+    },
+    LocationData {
+        name: "Palazzo Vecchio",
+        lat: 43.7693,
+        lng: 11.2563,
+        customer_type: CustomerType::Business,
+    },
+    LocationData {
+        name: "Uffizi Gallery",
+        lat: 43.7677,
+        lng: 11.2553,
+        customer_type: CustomerType::Business,
+    },
+    LocationData {
+        name: "Gucci Garden",
+        lat: 43.7692,
+        lng: 11.2556,
+        customer_type: CustomerType::Business,
+    },
+    LocationData {
+        name: "Ferragamo Museum",
+        lat: 43.7700,
+        lng: 11.2530,
+        customer_type: CustomerType::Business,
+    },
+    LocationData {
+        name: "Ospedale Santa Maria",
+        lat: 43.7830,
+        lng: 11.2690,
+        customer_type: CustomerType::Business,
+    },
+    LocationData {
+        name: "Universita degli Studi",
+        lat: 43.7765,
+        lng: 11.2555,
+        customer_type: CustomerType::Business,
+    },
+    LocationData {
+        name: "Palazzo Strozzi",
+        lat: 43.7706,
+        lng: 11.2515,
+        customer_type: CustomerType::Business,
+    },
+    LocationData {
+        name: "Biblioteca Nazionale",
+        lat: 43.7660,
+        lng: 11.2650,
+        customer_type: CustomerType::Business,
+    },
+    LocationData {
+        name: "Teatro del Maggio",
+        lat: 43.7780,
+        lng: 11.2470,
+        customer_type: CustomerType::Business,
+    },
+    LocationData {
+        name: "Palazzo Pitti",
+        lat: 43.7665,
+        lng: 11.2470,
+        customer_type: CustomerType::Business,
+    },
+    LocationData {
+        name: "Accademia Gallery",
+        lat: 43.7768,
+        lng: 11.2590,
+        customer_type: CustomerType::Business,
+    },
+    LocationData {
+        name: "Ospedale Meyer",
+        lat: 43.7910,
+        lng: 11.2520,
+        customer_type: CustomerType::Business,
+    },
+    LocationData {
+        name: "Polo Universitario",
+        lat: 43.7920,
+        lng: 11.2180,
+        customer_type: CustomerType::Business,
+    },
+    LocationData {
+        name: "Santo Spirito",
+        lat: 43.7665,
+        lng: 11.2470,
+        customer_type: CustomerType::Residential,
+    },
+    LocationData {
+        name: "San Frediano",
+        lat: 43.7680,
+        lng: 11.2420,
+        customer_type: CustomerType::Residential,
+    },
+    LocationData {
+        name: "Santa Croce",
+        lat: 43.7688,
+        lng: 11.2620,
+        customer_type: CustomerType::Residential,
+    },
+    LocationData {
+        name: "San Lorenzo",
+        lat: 43.7755,
+        lng: 11.2540,
+        customer_type: CustomerType::Residential,
+    },
+    LocationData {
+        name: "San Marco",
+        lat: 43.7768,
+        lng: 11.2590,
+        customer_type: CustomerType::Residential,
+    },
+    LocationData {
+        name: "Sant'Ambrogio",
+        lat: 43.7688,
+        lng: 11.2620,
+        customer_type: CustomerType::Residential,
+    },
+    LocationData {
+        name: "Campo di Marte",
+        lat: 43.7820,
+        lng: 11.2820,
+        customer_type: CustomerType::Residential,
+    },
+    LocationData {
+        name: "Novoli",
+        lat: 43.7880,
+        lng: 11.2220,
+        customer_type: CustomerType::Residential,
+    },
+    LocationData {
+        name: "Rifredi",
+        lat: 43.7950,
+        lng: 11.2410,
+        customer_type: CustomerType::Residential,
+    },
+    LocationData {
+        name: "Le Cure",
+        lat: 43.7890,
+        lng: 11.2580,
+        customer_type: CustomerType::Residential,
+    },
+    LocationData {
+        name: "Careggi",
+        lat: 43.8020,
+        lng: 11.2530,
+        customer_type: CustomerType::Residential,
+    },
+    LocationData {
+        name: "Peretola",
+        lat: 43.7960,
+        lng: 11.2050,
+        customer_type: CustomerType::Residential,
+    },
+    LocationData {
+        name: "Isolotto",
+        lat: 43.7620,
+        lng: 11.2200,
+        customer_type: CustomerType::Residential,
+    },
+    LocationData {
+        name: "Gavinana",
+        lat: 43.7520,
+        lng: 11.2680,
+        customer_type: CustomerType::Residential,
+    },
+    LocationData {
+        name: "Galluzzo",
+        lat: 43.7400,
+        lng: 11.2480,
+        customer_type: CustomerType::Residential,
+    },
+    LocationData {
+        name: "Porta Romana",
+        lat: 43.7610,
+        lng: 11.2560,
+        customer_type: CustomerType::Residential,
+    },
+    LocationData {
+        name: "Bellosguardo",
+        lat: 43.7650,
+        lng: 11.2350,
+        customer_type: CustomerType::Residential,
+    },
+    LocationData {
+        name: "Arcetri",
+        lat: 43.7500,
+        lng: 11.2530,
+        customer_type: CustomerType::Residential,
+    },
+    LocationData {
+        name: "Fiesole",
+        lat: 43.8055,
+        lng: 11.2935,
+        customer_type: CustomerType::Residential,
+    },
+    LocationData {
+        name: "Settignano",
+        lat: 43.7850,
+        lng: 11.3100,
+        customer_type: CustomerType::Residential,
+    },
+];

src/data/data_seed/firenze/visits_extra.rs

@@ -0,0 +1,196 @@
+use super::super::types::{CustomerType, LocationData};
+
+pub(in crate::data::data_seed) const VISITS: &[LocationData] = &[
+    LocationData {
+        name: "Mercato di Sant'Ambrogio",
+        lat: 43.7688,
+        lng: 11.2620,
+        customer_type: CustomerType::Restaurant,
+    },
+    LocationData {
+        name: "Procacci",
+        lat: 43.7706,
+        lng: 11.2515,
+        customer_type: CustomerType::Restaurant,
+    },
+    LocationData {
+        name: "La Menagere",
+        lat: 43.7755,
+        lng: 11.2540,
+        customer_type: CustomerType::Restaurant,
+    },
+    LocationData {
+        name: "Rivoire",
+        lat: 43.7693,
+        lng: 11.2563,
+        customer_type: CustomerType::Restaurant,
+    },
+    LocationData {
+        name: "Gelateria dei Neri",
+        lat: 43.7688,
+        lng: 11.2620,
+        customer_type: CustomerType::Restaurant,
+    },
+    LocationData {
+        name: "Trattoria Za Za",
+        lat: 43.7762,
+        lng: 11.2540,
+        customer_type: CustomerType::Restaurant,
+    },
+    LocationData {
+        name: "Il Santo Bevitore",
+        lat: 43.7680,
+        lng: 11.2420,
+        customer_type: CustomerType::Restaurant,
+    },
+    LocationData {
+        name: "Da Ruggero",
+        lat: 43.7610,
+        lng: 11.2560,
+        customer_type: CustomerType::Restaurant,
+    },
+    LocationData {
+        name: "Perseus",
+        lat: 43.7890,
+        lng: 11.2580,
+        customer_type: CustomerType::Restaurant,
+    },
+    LocationData {
+        name: "Coquinarius",
+        lat: 43.7720,
+        lng: 11.2535,
+        customer_type: CustomerType::Restaurant,
+    },
+    LocationData {
+        name: "Santa Maria del Fiore",
+        lat: 43.7755,
+        lng: 11.2540,
+        customer_type: CustomerType::Business,
+    },
+    LocationData {
+        name: "Stazione Leopolda",
+        lat: 43.7780,
+        lng: 11.2470,
+        customer_type: CustomerType::Business,
+    },
+    LocationData {
+        name: "Fortezza da Basso",
+        lat: 43.7762,
+        lng: 11.2540,
+        customer_type: CustomerType::Business,
+    },
+    LocationData {
+        name: "Palazzo Medici Riccardi",
+        lat: 43.7765,
+        lng: 11.2555,
+        customer_type: CustomerType::Business,
+    },
+    LocationData {
+        name: "San Lorenzo Market",
+        lat: 43.7762,
+        lng: 11.2540,
+        customer_type: CustomerType::Business,
+    },
+    LocationData {
+        name: "Santa Maria Novella",
+        lat: 43.7745,
+        lng: 11.2487,
+        customer_type: CustomerType::Business,
+    },
+    LocationData {
+        name: "Boboli Gardens Office",
+        lat: 43.7665,
+        lng: 11.2470,
+        customer_type: CustomerType::Business,
+    },
+    LocationData {
+        name: "Villa Bardini",
+        lat: 43.7660,
+        lng: 11.2650,
+        customer_type: CustomerType::Business,
+    },
+    LocationData {
+        name: "Careggi Hospital",
+        lat: 43.8020,
+        lng: 11.2530,
+        customer_type: CustomerType::Business,
+    },
+    LocationData {
+        name: "Coverciano Offices",
+        lat: 43.7850,
+        lng: 11.3100,
+        customer_type: CustomerType::Business,
+    },
+    LocationData {
+        name: "Firenze Airport Cargo",
+        lat: 43.7960,
+        lng: 11.2050,
+        customer_type: CustomerType::Business,
+    },
+    LocationData {
+        name: "Statuto",
+        lat: 43.7890,
+        lng: 11.2580,
+        customer_type: CustomerType::Residential,
+    },
+    LocationData {
+        name: "Piazza Beccaria",
+        lat: 43.7688,
+        lng: 11.2620,
+        customer_type: CustomerType::Residential,
+    },
+    LocationData {
+        name: "Coverciano",
+        lat: 43.7850,
+        lng: 11.3100,
+        customer_type: CustomerType::Residential,
+    },
+    LocationData {
+        name: "Campo di Marte East",
+        lat: 43.7820,
+        lng: 11.2820,
+        customer_type: CustomerType::Residential,
+    },
+    LocationData {
+        name: "Novoli South",
+        lat: 43.7880,
+        lng: 11.2220,
+        customer_type: CustomerType::Residential,
+    },
+    LocationData {
+        name: "Rifredi South",
+        lat: 43.7950,
+        lng: 11.2410,
+        customer_type: CustomerType::Residential,
+    },
+    LocationData {
+        name: "Careggi North",
+        lat: 43.8020,
+        lng: 11.2530,
+        customer_type: CustomerType::Residential,
+    },
+    LocationData {
+        name: "Isolotto South",
+        lat: 43.7620,
+        lng: 11.2200,
+        customer_type: CustomerType::Residential,
+    },
+    LocationData {
+        name: "Gavinana South",
+        lat: 43.7520,
+        lng: 11.2680,
+        customer_type: CustomerType::Residential,
+    },
+    LocationData {
+        name: "Galluzzo Center",
+        lat: 43.7400,
+        lng: 11.2480,
+        customer_type: CustomerType::Residential,
+    },
+    LocationData {
+        name: "Arcetri Hill",
+        lat: 43.7500,
+        lng: 11.2530,
+        customer_type: CustomerType::Residential,
+    },
+];

src/data/data_seed/hartford.rs

@@ -0,0 +1,8 @@
+use super::types::LocationData;
+
+mod depots;
+mod visits;
+mod visits_extra;
+
+pub(super) use depots::DEPOTS;
+pub(super) const VISIT_GROUPS: &[&[LocationData]] = &[visits::VISITS, visits_extra::VISITS];

src/data/data_seed/hartford/depots.rs

@@ -0,0 +1,64 @@
+use super::super::types::{CustomerType, LocationData};
+
+pub(in crate::data::data_seed) const DEPOTS: &[LocationData] = &[
+    LocationData {
+        name: "Downtown Hartford Depot",
+        lat: 41.7658,
+        lng: -72.6734,
+        customer_type: CustomerType::Business,
+    },
+    LocationData {
+        name: "Asylum Hill Depot",
+        lat: 41.7700,
+        lng: -72.6900,
+        customer_type: CustomerType::Business,
+    },
+    LocationData {
+        name: "South End Depot",
+        lat: 41.7400,
+        lng: -72.6750,
+        customer_type: CustomerType::Business,
+    },
+    LocationData {
+        name: "West End Depot",
+        lat: 41.7680,
+        lng: -72.7100,
+        customer_type: CustomerType::Business,
+    },
+    LocationData {
+        name: "Barry Square Depot",
+        lat: 41.7450,
+        lng: -72.6800,
+        customer_type: CustomerType::Business,
+    },
+    LocationData {
+        name: "Clay Arsenal Depot",
+        lat: 41.7750,
+        lng: -72.6850,
+        customer_type: CustomerType::Business,
+    },
+    LocationData {
+        name: "Science Center Depot",
+        lat: 41.7650,
+        lng: -72.6695,
+        customer_type: CustomerType::Business,
+    },
+    LocationData {
+        name: "Frog Hollow Depot",
+        lat: 41.7580,
+        lng: -72.6900,
+        customer_type: CustomerType::Business,
+    },
+    LocationData {
+        name: "Blue Hills Depot",
+        lat: 41.7850,
+        lng: -72.7050,
+        customer_type: CustomerType::Business,
+    },
+    LocationData {
+        name: "Charter Oak Depot",
+        lat: 41.7495,
+        lng: -72.6650,
+        customer_type: CustomerType::Business,
+    },
+];

src/data/data_seed/hartford/visits.rs

@@ -0,0 +1,184 @@
+use super::super::types::{CustomerType, LocationData};
+
+pub(in crate::data::data_seed) const VISITS: &[LocationData] = &[
+    LocationData {
+        name: "Max Downtown",
+        lat: 41.7670,
+        lng: -72.6730,
+        customer_type: CustomerType::Restaurant,
+    },
+    LocationData {
+        name: "Trumbull Kitchen",
+        lat: 41.7650,
+        lng: -72.6750,
+        customer_type: CustomerType::Restaurant,
+    },
+    LocationData {
+        name: "Salute",
+        lat: 41.7630,
+        lng: -72.6740,
+        customer_type: CustomerType::Restaurant,
+    },
+    LocationData {
+        name: "Peppercorns Grill",
+        lat: 41.7680,
+        lng: -72.6700,
+        customer_type: CustomerType::Restaurant,
+    },
+    LocationData {
+        name: "Feng Asian Bistro",
+        lat: 41.7640,
+        lng: -72.6725,
+        customer_type: CustomerType::Restaurant,
+    },
+    LocationData {
+        name: "On20",
+        lat: 41.7655,
+        lng: -72.6728,
+        customer_type: CustomerType::Restaurant,
+    },
+    LocationData {
+        name: "First and Last Tavern",
+        lat: 41.7620,
+        lng: -72.7050,
+        customer_type: CustomerType::Restaurant,
+    },
+    LocationData {
+        name: "Agave Grill",
+        lat: 41.7580,
+        lng: -72.6820,
+        customer_type: CustomerType::Restaurant,
+    },
+    LocationData {
+        name: "Bear's Smokehouse",
+        lat: 41.7550,
+        lng: -72.6780,
+        customer_type: CustomerType::Restaurant,
+    },
+    LocationData {
+        name: "City Steam Brewery",
+        lat: 41.7630,
+        lng: -72.6750,
+        customer_type: CustomerType::Restaurant,
+    },
+    LocationData {
+        name: "Travelers Tower",
+        lat: 41.7658,
+        lng: -72.6734,
+        customer_type: CustomerType::Business,
+    },
+    LocationData {
+        name: "Hartford Steam Boiler",
+        lat: 41.7680,
+        lng: -72.6700,
+        customer_type: CustomerType::Business,
+    },
+    LocationData {
+        name: "Aetna Building",
+        lat: 41.7700,
+        lng: -72.6900,
+        customer_type: CustomerType::Business,
+    },
+    LocationData {
+        name: "Connecticut Convention Center",
+        lat: 41.7615,
+        lng: -72.6820,
+        customer_type: CustomerType::Business,
+    },
+    LocationData {
+        name: "Hartford Hospital",
+        lat: 41.7547,
+        lng: -72.6858,
+        customer_type: CustomerType::Business,
+    },
+    LocationData {
+        name: "Connecticut Children's",
+        lat: 41.7560,
+        lng: -72.6850,
+        customer_type: CustomerType::Business,
+    },
+    LocationData {
+        name: "Trinity College",
+        lat: 41.7580,
+        lng: -72.6900,
+        customer_type: CustomerType::Business,
+    },
+    LocationData {
+        name: "Connecticut Science Center",
+        lat: 41.7650,
+        lng: -72.6695,
+        customer_type: CustomerType::Business,
+    },
+    LocationData {
+        name: "West End Hartford",
+        lat: 41.7680,
+        lng: -72.7000,
+        customer_type: CustomerType::Residential,
+    },
+    LocationData {
+        name: "Asylum Hill",
+        lat: 41.7720,
+        lng: -72.6850,
+        customer_type: CustomerType::Residential,
+    },
+    LocationData {
+        name: "Frog Hollow",
+        lat: 41.7580,
+        lng: -72.6900,
+        customer_type: CustomerType::Residential,
+    },
+    LocationData {
+        name: "Barry Square",
+        lat: 41.7450,
+        lng: -72.6800,
+        customer_type: CustomerType::Residential,
+    },
+    LocationData {
+        name: "South End",
+        lat: 41.7400,
+        lng: -72.6750,
+        customer_type: CustomerType::Residential,
+    },
+    LocationData {
+        name: "Blue Hills",
+        lat: 41.7850,
+        lng: -72.7050,
+        customer_type: CustomerType::Residential,
+    },
+    LocationData {
+        name: "Parkville",
+        lat: 41.7650,
+        lng: -72.7100,
+        customer_type: CustomerType::Residential,
+    },
+    LocationData {
+        name: "Behind the Rocks",
+        lat: 41.7550,
+        lng: -72.7050,
+        customer_type: CustomerType::Residential,
+    },
+    LocationData {
+        name: "Charter Oak",
+        lat: 41.7495,
+        lng: -72.6650,
+        customer_type: CustomerType::Residential,
+    },
+    LocationData {
+        name: "Sheldon Charter Oak",
+        lat: 41.7510,
+        lng: -72.6700,
+        customer_type: CustomerType::Residential,
+    },
+    LocationData {
+        name: "Clay Arsenal",
+        lat: 41.7750,
+        lng: -72.6850,
+        customer_type: CustomerType::Residential,
+    },
+    LocationData {
+        name: "Upper Albany",
+        lat: 41.7780,
+        lng: -72.6950,
+        customer_type: CustomerType::Residential,
+    },
+];

src/data/data_seed/hartford/visits_extra.rs

@@ -0,0 +1,124 @@
+use super::super::types::{CustomerType, LocationData};
+
+pub(in crate::data::data_seed) const VISITS: &[LocationData] = &[
+    LocationData {
+        name: "The Place 2 Be",
+        lat: 41.7670,
+        lng: -72.6730,
+        customer_type: CustomerType::Restaurant,
+    },
+    LocationData {
+        name: "Republic at the Linden",
+        lat: 41.7650,
+        lng: -72.6750,
+        customer_type: CustomerType::Restaurant,
+    },
+    LocationData {
+        name: "Sorella",
+        lat: 41.7630,
+        lng: -72.6750,
+        customer_type: CustomerType::Restaurant,
+    },
+    LocationData {
+        name: "Black-Eyed Sally's",
+        lat: 41.7580,
+        lng: -72.6820,
+        customer_type: CustomerType::Restaurant,
+    },
+    LocationData {
+        name: "The Russell Hartford",
+        lat: 41.7655,
+        lng: -72.6728,
+        customer_type: CustomerType::Restaurant,
+    },
+    LocationData {
+        name: "Fiddleheads Cafe",
+        lat: 41.7580,
+        lng: -72.6900,
+        customer_type: CustomerType::Restaurant,
+    },
+    LocationData {
+        name: "Bushnell Center",
+        lat: 41.7615,
+        lng: -72.6820,
+        customer_type: CustomerType::Business,
+    },
+    LocationData {
+        name: "State Capitol",
+        lat: 41.7630,
+        lng: -72.6740,
+        customer_type: CustomerType::Business,
+    },
+    LocationData {
+        name: "Hartford Public Library",
+        lat: 41.7650,
+        lng: -72.6695,
+        customer_type: CustomerType::Business,
+    },
+    LocationData {
+        name: "XL Center",
+        lat: 41.7658,
+        lng: -72.6734,
+        customer_type: CustomerType::Business,
+    },
+    LocationData {
+        name: "Union Station Hartford",
+        lat: 41.7680,
+        lng: -72.6700,
+        customer_type: CustomerType::Business,
+    },
+    LocationData {
+        name: "Real Art Ways",
+        lat: 41.7650,
+        lng: -72.7100,
+        customer_type: CustomerType::Business,
+    },
+    LocationData {
+        name: "Colt Gateway",
+        lat: 41.7495,
+        lng: -72.6650,
+        customer_type: CustomerType::Business,
+    },
+    LocationData {
+        name: "South Green",
+        lat: 41.7550,
+        lng: -72.6780,
+        customer_type: CustomerType::Residential,
+    },
+    LocationData {
+        name: "North Meadows",
+        lat: 41.7750,
+        lng: -72.6850,
+        customer_type: CustomerType::Residential,
+    },
+    LocationData {
+        name: "South Meadows",
+        lat: 41.7400,
+        lng: -72.6750,
+        customer_type: CustomerType::Residential,
+    },
+    LocationData {
+        name: "West Hartford Line",
+        lat: 41.7680,
+        lng: -72.7000,
+        customer_type: CustomerType::Residential,
+    },
+    LocationData {
+        name: "Southwest Hartford",
+        lat: 41.7550,
+        lng: -72.7050,
+        customer_type: CustomerType::Residential,
+    },
+    LocationData {
+        name: "North End",
+        lat: 41.7780,
+        lng: -72.6950,
+        customer_type: CustomerType::Residential,
+    },
+    LocationData {
+        name: "Park Terrace",
+        lat: 41.7450,
+        lng: -72.6800,
+        customer_type: CustomerType::Residential,
+    },
+];

src/data/data_seed/philadelphia.rs

@@ -0,0 +1,8 @@
+use super::types::LocationData;
+
+mod depots;
+mod visits;
+mod visits_extra;
+
+pub(super) use depots::DEPOTS;
+pub(super) const VISIT_GROUPS: &[&[LocationData]] = &[visits::VISITS, visits_extra::VISITS];

src/data/data_seed/philadelphia/depots.rs

@@ -0,0 +1,64 @@
+use super::super::types::{CustomerType, LocationData};
+
+pub(in crate::data::data_seed) const DEPOTS: &[LocationData] = &[
+    LocationData {
+        name: "Central Depot - City Hall",
+        lat: 39.9526,
+        lng: -75.1652,
+        customer_type: CustomerType::Business,
+    },
+    LocationData {
+        name: "South Philly Depot",
+        lat: 39.9256,
+        lng: -75.1697,
+        customer_type: CustomerType::Business,
+    },
+    LocationData {
+        name: "University City Depot",
+        lat: 39.9522,
+        lng: -75.1932,
+        customer_type: CustomerType::Business,
+    },
+    LocationData {
+        name: "North Philly Depot",
+        lat: 39.9907,
+        lng: -75.1556,
+        customer_type: CustomerType::Business,
+    },
+    LocationData {
+        name: "Fishtown Depot",
+        lat: 39.9712,
+        lng: -75.1340,
+        customer_type: CustomerType::Business,
+    },
+    LocationData {
+        name: "West Philly Depot",
+        lat: 39.9601,
+        lng: -75.2175,
+        customer_type: CustomerType::Business,
+    },
+    LocationData {
+        name: "Logan Square Depot",
+        lat: 39.9567,
+        lng: -75.1720,
+        customer_type: CustomerType::Business,
+    },
+    LocationData {
+        name: "Pennsport Depot",
+        lat: 39.9320,
+        lng: -75.1450,
+        customer_type: CustomerType::Business,
+    },
+    LocationData {
+        name: "Kensington Depot",
+        lat: 39.9850,
+        lng: -75.1280,
+        customer_type: CustomerType::Business,
+    },
+    LocationData {
+        name: "Spruce Hill Depot",
+        lat: 39.9530,
+        lng: -75.2100,
+        customer_type: CustomerType::Business,
+    },
+];

src/data/data_seed/philadelphia/visits.rs

@@ -0,0 +1,298 @@
+use super::super::types::{CustomerType, LocationData};
+
+pub(in crate::data::data_seed) const VISITS: &[LocationData] = &[
+    LocationData {
+        name: "Reading Terminal Market",
+        lat: 39.9535,
+        lng: -75.1589,
+        customer_type: CustomerType::Restaurant,
+    },
+    LocationData {
+        name: "Parc Restaurant",
+        lat: 39.9493,
+        lng: -75.1727,
+        customer_type: CustomerType::Restaurant,
+    },
+    LocationData {
+        name: "Zahav",
+        lat: 39.9430,
+        lng: -75.1474,
+        customer_type: CustomerType::Restaurant,
+    },
+    LocationData {
+        name: "Vetri Cucina",
+        lat: 39.9499,
+        lng: -75.1659,
+        customer_type: CustomerType::Restaurant,
+    },
+    LocationData {
+        name: "Talula's Garden",
+        lat: 39.9470,
+        lng: -75.1709,
+        customer_type: CustomerType::Restaurant,
+    },
+    LocationData {
+        name: "Fork",
+        lat: 39.9493,
+        lng: -75.1539,
+        customer_type: CustomerType::Restaurant,
+    },
+    LocationData {
+        name: "Morimoto",
+        lat: 39.9488,
+        lng: -75.1559,
+        customer_type: CustomerType::Restaurant,
+    },
+    LocationData {
+        name: "Vernick Food & Drink",
+        lat: 39.9508,
+        lng: -75.1718,
+        customer_type: CustomerType::Restaurant,
+    },
+    LocationData {
+        name: "Friday Saturday Sunday",
+        lat: 39.9492,
+        lng: -75.1715,
+        customer_type: CustomerType::Restaurant,
+    },
+    LocationData {
+        name: "Royal Izakaya",
+        lat: 39.9410,
+        lng: -75.1509,
+        customer_type: CustomerType::Restaurant,
+    },
+    LocationData {
+        name: "Laurel",
+        lat: 39.9392,
+        lng: -75.1538,
+        customer_type: CustomerType::Restaurant,
+    },
+    LocationData {
+        name: "Marigold Kitchen",
+        lat: 39.9533,
+        lng: -75.1920,
+        customer_type: CustomerType::Restaurant,
+    },
+    LocationData {
+        name: "Comcast Center",
+        lat: 39.9543,
+        lng: -75.1690,
+        customer_type: CustomerType::Business,
+    },
+    LocationData {
+        name: "Liberty Place",
+        lat: 39.9520,
+        lng: -75.1685,
+        customer_type: CustomerType::Business,
+    },
+    LocationData {
+        name: "BNY Mellon Center",
+        lat: 39.9505,
+        lng: -75.1660,
+        customer_type: CustomerType::Business,
+    },
+    LocationData {
+        name: "One Liberty Place",
+        lat: 39.9520,
+        lng: -75.1685,
+        customer_type: CustomerType::Business,
+    },
+    LocationData {
+        name: "Aramark Tower",
+        lat: 39.9550,
+        lng: -75.1705,
+        customer_type: CustomerType::Business,
+    },
+    LocationData {
+        name: "PSFS Building",
+        lat: 39.9521,
+        lng: -75.1602,
+        customer_type: CustomerType::Business,
+    },
+    LocationData {
+        name: "Three Logan Square",
+        lat: 39.9567,
+        lng: -75.1720,
+        customer_type: CustomerType::Business,
+    },
+    LocationData {
+        name: "Two Commerce Square",
+        lat: 39.9551,
+        lng: -75.1675,
+        customer_type: CustomerType::Business,
+    },
+    LocationData {
+        name: "Penn Medicine",
+        lat: 39.9500,
+        lng: -75.1930,
+        customer_type: CustomerType::Business,
+    },
+    LocationData {
+        name: "Children's Hospital",
+        lat: 39.9482,
+        lng: -75.1950,
+        customer_type: CustomerType::Business,
+    },
+    LocationData {
+        name: "Drexel University",
+        lat: 39.9566,
+        lng: -75.1899,
+        customer_type: CustomerType::Business,
+    },
+    LocationData {
+        name: "Temple University",
+        lat: 39.9812,
+        lng: -75.1554,
+        customer_type: CustomerType::Business,
+    },
+    LocationData {
+        name: "Jefferson Hospital",
+        lat: 39.9487,
+        lng: -75.1577,
+        customer_type: CustomerType::Business,
+    },
+    LocationData {
+        name: "Pennsylvania Hospital",
+        lat: 39.9445,
+        lng: -75.1545,
+        customer_type: CustomerType::Business,
+    },
+    LocationData {
+        name: "FMC Tower",
+        lat: 39.9499,
+        lng: -75.1780,
+        customer_type: CustomerType::Business,
+    },
+    LocationData {
+        name: "Cira Centre",
+        lat: 39.9560,
+        lng: -75.1822,
+        customer_type: CustomerType::Business,
+    },
+    LocationData {
+        name: "Rittenhouse Square",
+        lat: 39.9496,
+        lng: -75.1718,
+        customer_type: CustomerType::Residential,
+    },
+    LocationData {
+        name: "Washington Square West",
+        lat: 39.9468,
+        lng: -75.1545,
+        customer_type: CustomerType::Residential,
+    },
+    LocationData {
+        name: "Society Hill",
+        lat: 39.9425,
+        lng: -75.1478,
+        customer_type: CustomerType::Residential,
+    },
+    LocationData {
+        name: "Old City",
+        lat: 39.9510,
+        lng: -75.1450,
+        customer_type: CustomerType::Residential,
+    },
+    LocationData {
+        name: "Northern Liberties",
+        lat: 39.9650,
+        lng: -75.1420,
+        customer_type: CustomerType::Residential,
+    },
+    LocationData {
+        name: "Fishtown",
+        lat: 39.9712,
+        lng: -75.1340,
+        customer_type: CustomerType::Residential,
+    },
+    LocationData {
+        name: "Queen Village",
+        lat: 39.9380,
+        lng: -75.1520,
+        customer_type: CustomerType::Residential,
+    },
+    LocationData {
+        name: "Bella Vista",
+        lat: 39.9395,
+        lng: -75.1598,
+        customer_type: CustomerType::Residential,
+    },
+    LocationData {
+        name: "Graduate Hospital",
+        lat: 39.9425,
+        lng: -75.1768,
+        customer_type: CustomerType::Residential,
+    },
+    LocationData {
+        name: "Fairmount",
+        lat: 39.9680,
+        lng: -75.1750,
+        customer_type: CustomerType::Residential,
+    },
+    LocationData {
+        name: "Spring Garden",
+        lat: 39.9620,
+        lng: -75.1620,
+        customer_type: CustomerType::Residential,
+    },
+    LocationData {
+        name: "Art Museum Area",
+        lat: 39.9656,
+        lng: -75.1810,
+        customer_type: CustomerType::Residential,
+    },
+    LocationData {
+        name: "Brewerytown",
+        lat: 39.9750,
+        lng: -75.1850,
+        customer_type: CustomerType::Residential,
+    },
+    LocationData {
+        name: "East Passyunk",
+        lat: 39.9310,
+        lng: -75.1605,
+        customer_type: CustomerType::Residential,
+    },
+    LocationData {
+        name: "Point Breeze",
+        lat: 39.9285,
+        lng: -75.1780,
+        customer_type: CustomerType::Residential,
+    },
+    LocationData {
+        name: "Pennsport",
+        lat: 39.9320,
+        lng: -75.1450,
+        customer_type: CustomerType::Residential,
+    },
+    LocationData {
+        name: "Powelton Village",
+        lat: 39.9610,
+        lng: -75.1950,
+        customer_type: CustomerType::Residential,
+    },
+    LocationData {
+        name: "Spruce Hill",
+        lat: 39.9530,
+        lng: -75.2100,
+        customer_type: CustomerType::Residential,
+    },
+    LocationData {
+        name: "Cedar Park",
+        lat: 39.9490,
+        lng: -75.2200,
+        customer_type: CustomerType::Residential,
+    },
+    LocationData {
+        name: "Kensington",
+        lat: 39.9850,
+        lng: -75.1280,
+        customer_type: CustomerType::Residential,
+    },
+    LocationData {
+        name: "Port Richmond",
+        lat: 39.9870,
+        lng: -75.1120,
+        customer_type: CustomerType::Residential,
+    },
+];

src/data/data_seed/philadelphia/visits_extra.rs

@@ -0,0 +1,202 @@
+use super::super::types::{CustomerType, LocationData};
+
+pub(in crate::data::data_seed) const VISITS: &[LocationData] = &[
+    LocationData {
+        name: "Di Bruno Bros",
+        lat: 39.9496,
+        lng: -75.1718,
+        customer_type: CustomerType::Restaurant,
+    },
+    LocationData {
+        name: "Federal Donuts Center City",
+        lat: 39.9492,
+        lng: -75.1715,
+        customer_type: CustomerType::Restaurant,
+    },
+    LocationData {
+        name: "High Street Philly",
+        lat: 39.9493,
+        lng: -75.1539,
+        customer_type: CustomerType::Restaurant,
+    },
+    LocationData {
+        name: "Suraya",
+        lat: 39.9712,
+        lng: -75.1340,
+        customer_type: CustomerType::Restaurant,
+    },
+    LocationData {
+        name: "Wm Mulherin's Sons",
+        lat: 39.9712,
+        lng: -75.1340,
+        customer_type: CustomerType::Restaurant,
+    },
+    LocationData {
+        name: "El Vez",
+        lat: 39.9499,
+        lng: -75.1659,
+        customer_type: CustomerType::Restaurant,
+    },
+    LocationData {
+        name: "Barbuzzo",
+        lat: 39.9493,
+        lng: -75.1727,
+        customer_type: CustomerType::Restaurant,
+    },
+    LocationData {
+        name: "The Love",
+        lat: 39.9508,
+        lng: -75.1718,
+        customer_type: CustomerType::Restaurant,
+    },
+    LocationData {
+        name: "30th Street Station",
+        lat: 39.9560,
+        lng: -75.1822,
+        customer_type: CustomerType::Business,
+    },
+    LocationData {
+        name: "University of Pennsylvania",
+        lat: 39.9500,
+        lng: -75.1930,
+        customer_type: CustomerType::Business,
+    },
+    LocationData {
+        name: "Franklin Institute",
+        lat: 39.9567,
+        lng: -75.1720,
+        customer_type: CustomerType::Business,
+    },
+    LocationData {
+        name: "Academy of Natural Sciences",
+        lat: 39.9567,
+        lng: -75.1720,
+        customer_type: CustomerType::Business,
+    },
+    LocationData {
+        name: "Kimmel Center",
+        lat: 39.9499,
+        lng: -75.1659,
+        customer_type: CustomerType::Business,
+    },
+    LocationData {
+        name: "City Hall Annex",
+        lat: 39.9526,
+        lng: -75.1652,
+        customer_type: CustomerType::Business,
+    },
+    LocationData {
+        name: "Independence Hall",
+        lat: 39.9510,
+        lng: -75.1450,
+        customer_type: CustomerType::Business,
+    },
+    LocationData {
+        name: "Navy Yard Offices",
+        lat: 39.9256,
+        lng: -75.1697,
+        customer_type: CustomerType::Business,
+    },
+    LocationData {
+        name: "Penn's Landing",
+        lat: 39.9410,
+        lng: -75.1509,
+        customer_type: CustomerType::Business,
+    },
+    LocationData {
+        name: "Rodin Museum",
+        lat: 39.9656,
+        lng: -75.1810,
+        customer_type: CustomerType::Business,
+    },
+    LocationData {
+        name: "Barnes Foundation",
+        lat: 39.9656,
+        lng: -75.1810,
+        customer_type: CustomerType::Business,
+    },
+    LocationData {
+        name: "Fitler Square",
+        lat: 39.9499,
+        lng: -75.1780,
+        customer_type: CustomerType::Residential,
+    },
+    LocationData {
+        name: "Logan Square",
+        lat: 39.9567,
+        lng: -75.1720,
+        customer_type: CustomerType::Residential,
+    },
+    LocationData {
+        name: "Callowhill",
+        lat: 39.9620,
+        lng: -75.1620,
+        customer_type: CustomerType::Residential,
+    },
+    LocationData {
+        name: "Francisville",
+        lat: 39.9680,
+        lng: -75.1750,
+        customer_type: CustomerType::Residential,
+    },
+    LocationData {
+        name: "Whitman",
+        lat: 39.9256,
+        lng: -75.1697,
+        customer_type: CustomerType::Residential,
+    },
+    LocationData {
+        name: "Passyunk Square",
+        lat: 39.9310,
+        lng: -75.1605,
+        customer_type: CustomerType::Residential,
+    },
+    LocationData {
+        name: "Girard Estates",
+        lat: 39.9285,
+        lng: -75.1780,
+        customer_type: CustomerType::Residential,
+    },
+    LocationData {
+        name: "West Powelton",
+        lat: 39.9610,
+        lng: -75.1950,
+        customer_type: CustomerType::Residential,
+    },
+    LocationData {
+        name: "Mantua",
+        lat: 39.9610,
+        lng: -75.1950,
+        customer_type: CustomerType::Residential,
+    },
+    LocationData {
+        name: "Walnut Hill",
+        lat: 39.9530,
+        lng: -75.2100,
+        customer_type: CustomerType::Residential,
+    },
+    LocationData {
+        name: "Cobbs Creek",
+        lat: 39.9490,
+        lng: -75.2200,
+        customer_type: CustomerType::Residential,
+    },
+    LocationData {
+        name: "Harrowgate",
+        lat: 39.9850,
+        lng: -75.1280,
+        customer_type: CustomerType::Residential,
+    },
+    LocationData {
+        name: "Tacony",
+        lat: 39.9870,
+        lng: -75.1120,
+        customer_type: CustomerType::Residential,
+    },
+    LocationData {
+        name: "Manayunk",
+        lat: 39.9750,
+        lng: -75.1850,
+        customer_type: CustomerType::Residential,
+    },
+];

src/data/data_seed/tests.rs

@@ -0,0 +1,123 @@
+use super::*;
+use crate::data::data_seed::types::LocationData;
+use solverforge_maps::{BoundingBox, Coord, NetworkConfig, RoadNetwork};
+
+#[test]
+fn parses_demo_data_ids_case_insensitively() {
+    assert!(matches!(
+        "philadelphia".parse::<DemoData>(),
+        Ok(DemoData::Philadelphia)
+    ));
+    assert!(matches!(
+        "HARTFORD".parse::<DemoData>(),
+        Ok(DemoData::Hartford)
+    ));
+}
+
+#[test]
+fn generates_city_demo_plan() {
+    for (demo, expected_stops, expected_name) in [
+        (
+            DemoData::Philadelphia,
+            visit_count(philadelphia::VISIT_GROUPS),
+            "Philadelphia",
+        ),
+        (
+            DemoData::Hartford,
+            visit_count(hartford::VISIT_GROUPS),
+            "Hartford",
+        ),
+        (
+            DemoData::Firenze,
+            visit_count(firenze::VISIT_GROUPS),
+            "Firenze",
+        ),
+    ] {
+        let plan = generate(demo);
+        assert_eq!(plan.name, expected_name);
+        assert_eq!(plan.vehicles.len(), 10);
+        assert_eq!(plan.deliveries.len(), expected_stops);
+        assert!(plan
+            .vehicles
+            .iter()
+            .all(|vehicle| vehicle.delivery_order.is_empty()));
+    }
+}
+
+fn visit_count(groups: &[&[LocationData]]) -> usize {
+    groups.iter().map(|group| group.len()).sum()
+}
+
+#[test]
+fn demo_delivery_counts_scale_with_ten_vehicles() {
+    assert_eq!(generate(DemoData::Philadelphia).deliveries.len(), 82);
+    assert_eq!(generate(DemoData::Hartford).deliveries.len(), 50);
+    assert_eq!(generate(DemoData::Firenze).deliveries.len(), 80);
+}
+
+#[test]
+fn demo_plans_have_enough_vehicle_capacity() {
+    for demo in [
+        DemoData::Philadelphia,
+        DemoData::Hartford,
+        DemoData::Firenze,
+    ] {
+        let plan = generate(demo);
+        let total_capacity: i32 = plan.vehicles.iter().map(|vehicle| vehicle.capacity).sum();
+        let total_demand: i32 = plan.deliveries.iter().map(|delivery| delivery.demand).sum();
+
+        assert!(
+            total_capacity >= total_demand,
+            "{demo:?} demo should be capacity-feasible before route ordering: capacity={total_capacity}, demand={total_demand}"
+        );
+    }
+}
+
+#[tokio::test]
+async fn live_demo_locations_are_mutually_reachable_when_enabled() {
+    if std::env::var("SOLVERFORGE_RUN_LIVE_TESTS").ok().as_deref() != Some("1") {
+        return;
+    }
+
+    for demo in [
+        DemoData::Philadelphia,
+        DemoData::Hartford,
+        DemoData::Firenze,
+    ] {
+        let plan = generate(demo);
+        let mut named_coords = Vec::new();
+        for delivery in &plan.deliveries {
+            named_coords.push((
+                format!("delivery {}", delivery.label),
+                delivery.coord().unwrap(),
+            ));
+        }
+        for vehicle in &plan.vehicles {
+            named_coords.push((
+                format!("depot {}", vehicle.name),
+                vehicle.depot_coord().unwrap(),
+            ));
+        }
+
+        let coords: Vec<Coord> = named_coords.iter().map(|(_, coord)| *coord).collect();
+        let bbox = BoundingBox::from_coords(&coords).expand_for_routing(&coords);
+        let network = RoadNetwork::load_or_fetch(&bbox, &NetworkConfig::default(), None)
+            .await
+            .unwrap();
+        let matrix = network.compute_matrix(&coords, None).await;
+        let unreachable = matrix
+            .unreachable_pairs()
+            .into_iter()
+            .map(|(from_idx, to_idx)| {
+                let from_name = &named_coords[from_idx].0;
+                let to_name = &named_coords[to_idx].0;
+                format!("{from_name} -> {to_name}")
+            })
+            .collect::<Vec<_>>();
+
+        assert!(
+            unreachable.is_empty(),
+            "{demo:?} has unreachable directed routes: {unreachable:?}"
+        );
+    }
+}

src/data/data_seed/types.rs

@@ -0,0 +1,48 @@
+use crate::domain::DeliveryKind;
+
+pub(super) const VEHICLE_NAMES: [&str; 10] = [
+    "Alpha", "Bravo", "Charlie", "Delta", "Echo", "Foxtrot", "Golf", "Hotel", "India", "Juliet",
+];
+
+#[derive(Clone, Copy)]
+pub(super) struct LocationData {
+    pub name: &'static str,
+    pub lat: f64,
+    pub lng: f64,
+    pub customer_type: CustomerType,
+}
+
+#[derive(Clone, Copy)]
+pub(super) enum CustomerType {
+    Residential,
+    Business,
+    Restaurant,
+}
+
+impl CustomerType {
+    pub(super) fn profile(self) -> (DeliveryKind, i64, i64, (i32, i32), (i64, i64)) {
+        match self {
+            CustomerType::Residential => (
+                DeliveryKind::Residential,
+                17 * 3600,
+                20 * 3600,
+                (1, 2),
+                (5 * 60, 10 * 60),
+            ),
+            CustomerType::Business => (
+                DeliveryKind::Business,
+                9 * 3600,
+                17 * 3600,
+                (3, 6),
+                (15 * 60, 30 * 60),
+            ),
+            CustomerType::Restaurant => (
+                DeliveryKind::Restaurant,
+                6 * 3600,
+                10 * 3600,
+                (5, 10),
+                (20 * 60, 40 * 60),
+            ),
+        }
+    }
+}

src/data/mod.rs

@@ -0,0 +1,10 @@
+//! Stable demo-data boundary for the deliveries app.
+//!
+//! Other layers should import `generate` and `DemoData` from here instead of
+//! reaching into city-specific seed modules. That keeps the public data surface
+//! small while the Philadelphia, Hartford, and Firenze fixtures can stay split
+//! for readability.
+
+mod data_seed;
+
+pub use data_seed::{generate, DemoData};

src/domain/coord_value.rs

@@ -0,0 +1,39 @@
+use serde::{Deserialize, Serialize};
+use std::fmt;
+use std::hash::{Hash, Hasher};
+
+#[derive(Copy, Clone, Default, Serialize, Deserialize)]
+#[serde(transparent)]
+pub struct CoordValue(pub f64);
+
+impl CoordValue {
+    pub fn get(self) -> f64 {
+        self.0
+    }
+}
+
+impl From<f64> for CoordValue {
+    fn from(value: f64) -> Self {
+        Self(value)
+    }
+}
+
+impl fmt::Debug for CoordValue {
+    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+        self.0.fmt(f)
+    }
+}
+
+impl PartialEq for CoordValue {
+    fn eq(&self, other: &Self) -> bool {
+        self.0.to_bits() == other.0.to_bits()
+    }
+}
+
+impl Eq for CoordValue {}
+
+impl Hash for CoordValue {
+    fn hash<H: Hasher>(&self, state: &mut H) {
+        self.0.to_bits().hash(state);
+    }
+}

src/domain/delivery.rs

@@ -0,0 +1,95 @@
+//! Delivery problem facts.
+//!
+//! A delivery is input data, not something SolverForge mutates directly. The
+//! solver places delivery ids into each vehicle's list variable.
+
+use serde::{Deserialize, Serialize};
+use solverforge::prelude::*;
+use solverforge_maps::{Coord, RoutingError};
+
+use super::CoordValue;
+
+/// A delivery stop that can be assigned into a vehicle route.
+#[problem_fact]
+#[derive(Serialize, Deserialize)]
+#[serde(rename_all = "camelCase")]
+pub struct Delivery {
+    #[planning_id]
+    pub id: usize,
+    pub label: String,
+    pub kind: DeliveryKind,
+    /// Latitude in decimal degrees, wrapped so derived equality stays stable.
+    pub lat: CoordValue,
+    /// Longitude in decimal degrees, wrapped so derived equality stays stable.
+    pub lng: CoordValue,
+    /// Load consumed from the assigned vehicle capacity.
+    pub demand: i32,
+    /// Earliest allowed service start, expressed as seconds after midnight.
+    pub min_start_time: i64,
+    /// Latest allowed service end, expressed as seconds after midnight.
+    pub max_end_time: i64,
+    /// Time spent at the stop after arrival.
+    pub service_duration: i64,
+}
+
+/// Coarse stop type used to shape demo-data demand and UI icons.
+#[derive(Clone, Copy, Debug, Default, Eq, PartialEq, Serialize, Deserialize)]
+#[serde(rename_all = "snake_case")]
+pub enum DeliveryKind {
+    Residential,
+    Business,
+    Restaurant,
+    #[default]
+    Other,
+}
+
+impl Delivery {
+    /// Creates one problem fact from transport-friendly primitive values.
+    pub fn new(
+        id: usize,
+        label: impl Into<String>,
+        kind: DeliveryKind,
+        coord: (f64, f64),
+        demand: i32,
+        time_window: (i64, i64),
+        service_duration: i64,
+    ) -> Self {
+        Self {
+            id,
+            label: label.into(),
+            kind,
+            lat: coord.0.into(),
+            lng: coord.1.into(),
+            demand,
+            min_start_time: time_window.0,
+            max_end_time: time_window.1,
+            service_duration,
+        }
+    }
+
+    /// Converts the serialized coordinates into the map library's checked type.
+    pub fn coord(&self) -> Result<Coord, RoutingError> {
+        Ok(Coord::try_new(self.lat.get(), self.lng.get())?)
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn test_delivery_construction() {
+        let fact = Delivery::new(
+            3,
+            "Test stop",
+            DeliveryKind::Business,
+            (43.77, 11.25),
+            4,
+            (9 * 3600, 17 * 3600),
+            20 * 60,
+        );
+        assert_eq!(fact.id, 3);
+        assert_eq!(fact.label, "Test stop");
+        assert_eq!(fact.kind, DeliveryKind::Business);
+    }
+}

src/domain/mod.rs

@@ -0,0 +1,42 @@
+//! Planning-model manifest and domain-layer exports.
+//!
+//! `planning_model!` is the single SolverForge model boundary. It lists the
+//! file-backed domain modules, exports the public names used by the rest of the
+//! app, and keeps list-variable hooks close to the domain they describe.
+
+solverforge::planning_model! {
+    root = "src/domain";
+
+    // @solverforge:begin domain-exports
+    mod coord_value;
+    mod delivery;
+    mod plan;
+    mod preview;
+    mod vehicle;
+
+    pub use coord_value::CoordValue;
+    pub use delivery::Delivery;
+    pub use delivery::DeliveryKind;
+    pub use plan::{Plan, PlanConstraintStreams};
+    pub use preview::{
+        DeliveryPreview, PlanPreview, PlanViewState, RoutingMode, TimelineView, VehiclePreview,
+        VehiclePreviewStop,
+    };
+    pub use vehicle::Vehicle;
+    // @solverforge:end domain-exports
+
+    mod route_metrics;
+
+    pub use route_metrics::{
+        build_routes_snapshot, delivery_clarke_wright_depot, delivery_element_load,
+        delivery_k_opt_depot, delivery_k_opt_feasible, delivery_route_capacity,
+        delivery_route_distance, evaluate_plan, get_delivery_route, prepare_plan,
+        preview_for_plan, rank_delivery_insertions, replace_delivery_route,
+        DeliveryInsertionCandidate, DeliveryRoutingSolution, PlanScoreComponents,
+        PreparedVehicleRouting, RouteLegGeometry, RouteLegSummary, RoutesSnapshot,
+        VehicleRouteMetrics, UNASSIGNED_DELIVERY_HARD_PENALTY,
+    };
+}
+
+#[cfg(test)]
+mod plan_tests;

src/domain/plan.rs

@@ -0,0 +1,169 @@
+//! Planning solution for the delivery-routing problem.
+//!
+//! The `Plan` owns facts, planning entities, score, routing mode, and transient
+//! prepared route matrices. It is both the solver input and the shape serialized
+//! through the API after `PlanDto` flattens it.
+
+use std::collections::HashMap;
+use std::sync::Arc;
+
+use serde::{Deserialize, Serialize};
+use solverforge::cvrp::ProblemData;
+use solverforge::prelude::*;
+
+// @solverforge:begin solution-imports
+use super::route_metrics::preview_for_plan;
+use super::{Delivery, PlanViewState, RoutingMode, Vehicle};
+// @solverforge:end solution-imports
+
+#[planning_solution(
+    constraints = "crate::constraints::create_constraints",
+    solver_toml = "../../solver.toml"
+)]
+#[shadow_variable_updates(
+    list_owner = "vehicles",
+    post_update_listener = "refresh_vehicle_route_shadows"
+)]
+#[derive(Serialize, Deserialize)]
+#[serde(rename_all = "camelCase")]
+pub struct Plan {
+    pub name: String,
+    #[serde(default)]
+    pub routing_mode: RoutingMode,
+    #[serde(default)]
+    pub view_state: PlanViewState,
+    // @solverforge:begin solution-collections
+    #[problem_fact_collection]
+    pub deliveries: Vec<Delivery>,
+    #[planning_entity_collection]
+    pub vehicles: Vec<Vehicle>,
+    // @solverforge:end solution-collections
+    #[planning_score]
+    pub score: Option<HardSoftScore>,
+    /// Transient CVRP matrices shared with SolverForge list-variable hooks.
+    ///
+    /// This is skipped in JSON because it is rebuilt from coordinates before a
+    /// solve or route-geometry request.
+    #[serde(skip, default)]
+    pub prepared_problem_data: Vec<Arc<ProblemData>>,
+}
+
+impl Plan {
+    /// Builds a normalized plan from facts and route-owning vehicles.
+    pub fn new(name: impl Into<String>, deliveries: Vec<Delivery>, vehicles: Vec<Vehicle>) -> Self {
+        let mut plan = Self {
+            name: name.into(),
+            routing_mode: RoutingMode::default(),
+            view_state: PlanViewState::default(),
+            deliveries,
+            vehicles,
+            score: None,
+            prepared_problem_data: Vec::new(),
+        };
+        plan.normalize();
+        plan
+    }
+
+    /// Reassigns dense ids and clears transient routing caches after decoding.
+    ///
+    /// SolverForge list variables store delivery indexes. If transport data
+    /// arrived with older public ids, this maps route entries back onto the
+    /// current dense delivery positions before scoring.
+    pub fn normalize(&mut self) {
+        let delivery_id_map: HashMap<usize, usize> = self
+            .deliveries
+            .iter()
+            .enumerate()
+            .map(|(idx, delivery)| (delivery.id, idx))
+            .collect();
+
+        for (idx, delivery) in self.deliveries.iter_mut().enumerate() {
+            delivery.id = idx;
+        }
+
+        for (idx, vehicle) in self.vehicles.iter_mut().enumerate() {
+            vehicle.id = idx;
+            vehicle.prepared_routing = None;
+            vehicle.delivery_order = vehicle
+                .delivery_order
+                .iter()
+                .filter_map(|old_id| delivery_id_map.get(old_id).copied())
+                .collect();
+            vehicle.refresh_route_shadows();
+        }
+        self.prepared_problem_data.clear();
+    }
+
+    /// Removes one delivery id from every route before insertion previewing.
+    pub fn remove_delivery_assignments(&mut self, delivery_id: usize) {
+        for vehicle in &mut self.vehicles {
+            vehicle
+                .delivery_order
+                .retain(|assigned| *assigned != delivery_id);
+        }
+    }
+
+    /// List-variable post-update hook used by SolverForge shadow variables.
+    pub fn refresh_vehicle_route_shadows(&mut self, vehicle_idx: usize) {
+        if let Some(vehicle) = self.vehicles.get_mut(vehicle_idx) {
+            vehicle.refresh_route_shadows();
+        }
+    }
+
+    /// Clones the plan and attaches the UI-facing route preview.
+    pub fn refreshed_for_transport(&self) -> Self {
+        let mut plan = self.clone();
+        plan.view_state.preview = Some(preview_for_plan(&plan));
+        plan
+    }
+}
+
+impl solverforge::cvrp::VrpSolution for Plan {
+    /// Gives SolverForge's CVRP move selectors access to prepared matrices.
+    fn vehicle_data_ptr(&self, entity_idx: usize) -> *const ProblemData {
+        self.vehicles[entity_idx]
+            .prepared_routing
+            .as_ref()
+            .and_then(|prepared| self.prepared_problem_data.get(prepared.problem_data_index))
+            .map(Arc::as_ptr)
+            .unwrap_or(std::ptr::null())
+    }
+
+    /// Reads the mutable list variable for one vehicle as visit ids.
+    fn vehicle_visits(&self, entity_idx: usize) -> &[usize] {
+        &self.vehicles[entity_idx].delivery_order
+    }
+
+    /// Lets CVRP construction and local-search hooks replace one vehicle route.
+    fn vehicle_visits_mut(&mut self, entity_idx: usize) -> &mut Vec<usize> {
+        &mut self.vehicles[entity_idx].delivery_order
+    }
+
+    /// Reports the number of route-owning planning entities.
+    fn vehicle_count(&self) -> usize {
+        self.vehicles.len()
+    }
+}
+
+#[cfg(test)]
+impl Plan {
+    pub(crate) fn test_has_list_variable() -> bool {
+        Self::__solverforge_has_list_variable()
+    }
+
+    pub(crate) fn test_total_list_entities(plan: &Self) -> usize {
+        Self::__solverforge_total_list_entities(plan)
+    }
+
+    pub(crate) fn test_total_list_elements(plan: &Self) -> usize {
+        Self::__solverforge_total_list_elements(plan)
+    }
+
+    pub(crate) fn test_is_trivial(plan: &Self) -> bool {
+        Self::__solverforge_is_trivial(plan)
+    }
+
+    pub(crate) fn test_phase_count(config: &solverforge::SolverConfig) -> usize {
+        Self::__solverforge_build_phases(config).phases().len()
+    }
+}

src/domain/plan_tests.rs

@@ -0,0 +1,243 @@
+use super::*;
+use crate::data::{generate, DemoData};
+use crate::domain::{prepare_plan, DeliveryKind, UNASSIGNED_DELIVERY_HARD_PENALTY};
+use solverforge::{Director, ScoreDirector, SolverConfig, SolverEvent, SolverManager};
+
+fn tiny_plan() -> Plan {
+    Plan::new(
+        "tiny",
+        vec![
+            Delivery::new(
+                0,
+                "A",
+                DeliveryKind::Residential,
+                (39.9526, -75.1652),
+                1,
+                (8 * 3600, 18 * 3600),
+                10 * 60,
+            ),
+            Delivery::new(
+                1,
+                "B",
+                DeliveryKind::Business,
+                (39.9626, -75.1752),
+                1,
+                (8 * 3600, 18 * 3600),
+                10 * 60,
+            ),
+        ],
+        vec![Vehicle::new(0, "Van 1", 4, 39.9526, -75.1652, 8 * 3600)],
+    )
+}
+
+fn prepared_tiny_plan_with_route() -> Plan {
+    let mut plan = tiny_plan();
+    plan.routing_mode = RoutingMode::StraightLine;
+    plan.vehicles[0].delivery_order = vec![0, 1];
+    tokio::runtime::Builder::new_current_thread()
+        .enable_all()
+        .build()
+        .expect("tokio runtime")
+        .block_on(async {
+            prepare_plan(&mut plan)
+                .await
+                .expect("plan preparation should work");
+        });
+    plan
+}
+
+#[test]
+fn score_director_populates_vehicle_route_shadows() {
+    let plan = prepared_tiny_plan_with_route();
+    assert_eq!(
+        plan.vehicles[0].route_total_demand, 0,
+        "prepared transport data should not eagerly populate solver shadows"
+    );
+
+    let mut director = ScoreDirector::with_descriptor(
+        plan,
+        crate::constraints::create_constraints(),
+        Plan::descriptor(),
+        Plan::entity_count,
+    );
+    let score = director.calculate_score();
+    let vehicle = &director.working_solution().vehicles[0];
+
+    assert_eq!(vehicle.total_assigned_demand(), 2);
+    assert_eq!(vehicle.capacity_overage(), 0);
+    assert!(
+        vehicle.total_travel_seconds() > 0,
+        "route travel should be maintained as a shadow value"
+    );
+    assert_eq!(score.hard(), 0);
+}
+
+#[test]
+fn vehicle_route_shadows_refresh_after_list_variable_changes() {
+    let plan = prepared_tiny_plan_with_route();
+    let mut director = ScoreDirector::with_descriptor(
+        plan,
+        crate::constraints::create_constraints(),
+        Plan::descriptor(),
+        Plan::entity_count,
+    );
+    director.calculate_score();
+    assert_eq!(
+        director.working_solution().vehicles[0].total_assigned_demand(),
+        2
+    );
+
+    director.before_variable_changed(0, 0);
+    director.working_solution_mut().vehicles[0]
+        .delivery_order
+        .clear();
+    director.after_variable_changed(0, 0);
+    let score = director.calculate_score();
+
+    let vehicle = &director.working_solution().vehicles[0];
+    assert_eq!(vehicle.total_assigned_demand(), 0);
+    assert_eq!(vehicle.total_travel_seconds(), 0);
+    assert_eq!(vehicle.time_window_violation_seconds(), 0);
+    assert_eq!(score.hard(), -(2 * UNASSIGNED_DELIVERY_HARD_PENALTY));
+}
+
+#[test]
+fn generated_list_runtime_is_non_trivial_and_builds_routes() {
+    static MANAGER: SolverManager<Plan> = SolverManager::new();
+
+    let mut plan = tiny_plan();
+    plan.routing_mode = RoutingMode::StraightLine;
+    tokio::runtime::Builder::new_current_thread()
+        .enable_all()
+        .build()
+        .expect("tokio runtime")
+        .block_on(async {
+            prepare_plan(&mut plan)
+                .await
+                .expect("plan preparation should work");
+        });
+
+    assert!(
+        Plan::test_has_list_variable(),
+        "delivery plan should expose a list variable"
+    );
+    assert_eq!(Plan::test_total_list_entities(&plan), 1);
+    assert_eq!(Plan::test_total_list_elements(&plan), 2);
+    assert!(
+        !Plan::test_is_trivial(&plan),
+        "prepared plan should not be trivial"
+    );
+
+    let config =
+        SolverConfig::from_toml_str(include_str!("../../solver.toml")).expect("valid config");
+    assert_eq!(
+        Plan::test_phase_count(&config),
+        3,
+        "expected Clarke-Wright construction + list k-opt + local search"
+    );
+
+    let (job_id, mut receiver) = MANAGER.solve(plan).expect("solve should start");
+    let mut saw_non_empty_best = false;
+    loop {
+        match receiver
+            .blocking_recv()
+            .expect("event stream should reach a terminal event")
+        {
+            SolverEvent::BestSolution { solution, .. } => {
+                if solution
+                    .vehicles
+                    .iter()
+                    .any(|vehicle| !vehicle.delivery_order.is_empty())
+                {
+                    saw_non_empty_best = true;
+                    MANAGER.cancel(job_id).expect("job cancel should succeed");
+                }
+            }
+            SolverEvent::Completed { .. } | SolverEvent::Cancelled { .. } => break,
+            SolverEvent::Failed { error, .. } => {
+                panic!("solve unexpectedly failed: {error}");
+            }
+            SolverEvent::Progress { .. }
+            | SolverEvent::PauseRequested { .. }
+            | SolverEvent::Paused { .. }
+            | SolverEvent::Resumed { .. } => {}
+        }
+    }
+    MANAGER
+        .delete(job_id)
+        .expect("completed test job should delete");
+
+    assert!(
+        saw_non_empty_best,
+        "expected a non-empty best solution before cancellation"
+    );
+}
+
+#[test]
+fn seeded_philadelphia_plan_emits_a_non_empty_best_solution() {
+    static MANAGER: SolverManager<Plan> = SolverManager::new();
+
+    let mut plan = generate(DemoData::Philadelphia);
+    plan.routing_mode = RoutingMode::StraightLine;
+    tokio::runtime::Builder::new_current_thread()
+        .enable_all()
+        .build()
+        .expect("tokio runtime")
+        .block_on(async {
+            prepare_plan(&mut plan)
+                .await
+                .expect("plan preparation should work");
+        });
+
+    let (job_id, mut receiver) = MANAGER.solve(plan).expect("solve should start");
+    let mut saw_non_empty_best = false;
+    let mut first_non_empty_best: Option<Plan> = None;
+    loop {
+        match receiver
+            .blocking_recv()
+            .expect("event stream should reach a terminal event")
+        {
+            SolverEvent::BestSolution { solution, .. } => {
+                if solution
+                    .vehicles
+                    .iter()
+                    .any(|vehicle| !vehicle.delivery_order.is_empty())
+                {
+                    saw_non_empty_best = true;
+                    first_non_empty_best.get_or_insert(solution.clone());
+                    MANAGER.cancel(job_id).expect("job cancel should succeed");
+                }
+            }
+            SolverEvent::Completed { .. } | SolverEvent::Cancelled { .. } => break,
+            SolverEvent::Failed { error, .. } => {
+                panic!("solve unexpectedly failed: {error}");
+            }
+            SolverEvent::Progress { .. }
+            | SolverEvent::PauseRequested { .. }
+            | SolverEvent::Paused { .. }
+            | SolverEvent::Resumed { .. } => {}
+        }
+    }
+    MANAGER
+        .delete(job_id)
+        .expect("completed test job should delete");
+
+    assert!(
+        saw_non_empty_best,
+        "expected a non-empty best solution for the seeded Philadelphia plan"
+    );
+    let best = first_non_empty_best.expect("should retain the first non-empty best solution");
+    assert!(
+        best.vehicles
+            .iter()
+            .any(|vehicle| vehicle.delivery_order.len() > 1),
+        "expected at least one multi-stop route after construction"
+    );
+    let director = ScoreDirector::with_descriptor(
+        best.clone(),
+        crate::constraints::create_constraints(),
+        Plan::descriptor(),
+        Plan::entity_count,
+    );
+    assert_eq!(director.entity_count(0), Some(best.vehicles.len()));
+}

src/domain/preview.rs

@@ -0,0 +1,105 @@
+//! Browser preview structs embedded in `Plan.view_state`.
+//!
+//! These values are derived from the domain plan before transport. They let the
+//! frontend render route summaries and timelines without duplicating every
+//! scoring rule.
+
+use serde::{Deserialize, Serialize};
+
+/// Chooses whether routing uses fast straight lines or real road-network data.
+#[derive(Clone, Copy, Debug, Default, Eq, PartialEq, Serialize, Deserialize)]
+#[serde(rename_all = "snake_case")]
+pub enum RoutingMode {
+    StraightLine,
+    #[default]
+    RoadNetwork,
+}
+
+/// Selects which timeline rail the browser shows.
+#[derive(Clone, Copy, Debug, Default, Eq, PartialEq, Serialize, Deserialize)]
+#[serde(rename_all = "snake_case")]
+pub enum TimelineView {
+    #[default]
+    ByVehicle,
+    ByDelivery,
+}
+
+/// UI-only state that travels with the plan between browser and backend.
+#[derive(Clone, Debug, Default, Serialize, Deserialize)]
+#[serde(rename_all = "camelCase")]
+pub struct PlanViewState {
+    #[serde(default)]
+    pub timeline_view: TimelineView,
+    pub selected_vehicle_id: Option<usize>,
+    pub selected_delivery_id: Option<usize>,
+    #[serde(default)]
+    pub preview: Option<PlanPreview>,
+}
+
+/// Aggregate route and score preview for the full plan.
+#[derive(Clone, Debug, Default, Serialize, Deserialize)]
+#[serde(rename_all = "camelCase")]
+pub struct PlanPreview {
+    pub hard_score: i64,
+    pub soft_score: i64,
+    pub unassigned_delivery_ids: Vec<usize>,
+    pub vehicles: Vec<VehiclePreview>,
+    pub deliveries: Vec<DeliveryPreview>,
+}
+
+/// Per-vehicle route summary used by cards, lists, and timelines.
+#[derive(Clone, Debug, Default, Serialize, Deserialize)]
+#[serde(rename_all = "camelCase")]
+pub struct VehiclePreview {
+    pub vehicle_id: usize,
+    pub vehicle_name: String,
+    pub total_demand: i32,
+    pub capacity_overage: i32,
+    pub stop_count: usize,
+    pub total_travel_seconds: i64,
+    pub total_wait_seconds: i64,
+    pub total_service_seconds: i64,
+    pub total_late_seconds: i64,
+    pub start_time: i64,
+    pub end_time: i64,
+    pub stops: Vec<VehiclePreviewStop>,
+}
+
+/// One delivery stop on a vehicle timeline.
+#[derive(Clone, Debug, Default, Serialize, Deserialize)]
+#[serde(rename_all = "camelCase")]
+pub struct VehiclePreviewStop {
+    pub delivery_id: usize,
+    pub label: String,
+    pub kind: String,
+    pub sequence: usize,
+    pub demand: i32,
+    pub min_start_time: i64,
+    pub max_end_time: i64,
+    pub arrival_time: i64,
+    pub service_start_time: i64,
+    pub departure_time: i64,
+    pub travel_seconds_from_previous: i64,
+    pub wait_seconds: i64,
+    pub late_seconds: i64,
+}
+
+/// Per-delivery assignment summary used by data tables and timelines.
+#[derive(Clone, Debug, Default, Serialize, Deserialize)]
+#[serde(rename_all = "camelCase")]
+pub struct DeliveryPreview {
+    pub delivery_id: usize,
+    pub label: String,
+    pub kind: String,
+    pub demand: i32,
+    pub min_start_time: i64,
+    pub max_end_time: i64,
+    pub service_duration: i64,
+    pub assigned_vehicle_id: Option<usize>,
+    pub assigned_vehicle_name: Option<String>,
+    pub sequence: Option<usize>,
+    pub arrival_time: Option<i64>,
+    pub service_start_time: Option<i64>,
+    pub departure_time: Option<i64>,
+    pub late_seconds: Option<i64>,
+}