fix: safely convert line number string arguments to integers in dataflow agent tools

feat: upgrade scanner with route-middleware modeling, adaptive context triage, and memory scaling

feat: sync proximity deduplication, max_iterations=10, timeout extensions, and secrets entropy fixes to backend

fix: resolve logic, security, and memory leak issues in scanner layers

perf: hybrid AST+LLM taint tracer and tier 0 pre-filter

feat(scanner): implement 5 targeted improvements to scanning engine and rules

Migrate backend to Gemini 3.1 Flash Lite and optimize JS/TS rulesets

refactor(backend): use asyncio and thread pools for background tasks, optimize scanner AST utils and checks

feat(scanner): sync dynamic secrets validation filters and entropy triaging

fix(pipeline): implement lockfile pre-filters, taint confirmation flag overrides, and scanner self-exclusions

feat(secrets & sast & robustness): optimize Semgrep with community rules, remove TruffleHog verify filesystem filter, add LLM fail-open guards to prevent 429 pipeline crash

perf & robustness: optimize line counting via binary search, relax pipeline filters for training apps, and fix Windows ARG_MAX SAST crash

feat: Upgrade taint analysis agent and exploit chain correlator with advanced security reasoning

feat: secure Python backend engine v2.0