chore: finir le retrait execution_mode (audit du commit precedent)

refactor(adapters): retrait de execution_mode (mensonge structurel)

chore(versioning): reposition project as 0.9.0 (pre-1.0)

docs(root): move ACCESSIBILITY and SPECS out of root to their proper sections

docs(archive): consolidate audits, migration, pre-v2 roadmap under docs/archive/

docs(changelog): archive pre-v2 history, exclude archive from ratchet

hardening(web): durcissement des defaults P0 issus de l'audit prod

chore: Phase B3-final commit 7 — CHANGELOG + budgets + doc API stable

chore(sprint-S7)!: nettoyage qualité — shims supprimés, silent excepts éliminés

docs(sprint-H.9): archive migration plans + cleanup stale doc paths

docs(sprint-H.8): cleanup obsolete legacy/shim language in production docstrings

feat(sprint-H.5+H.6)!: v2.0.0 — CLAUDE.md + CHANGELOG + bump version

feat(sprint-H.4)!: drop _legacy/ prefix — interfaces/{cli,web} consolidées

feat(sprint-H.2.c-d)!: suppression complète de adapters/legacy_engines/ et adapters/legacy_pipelines/

feat(sprint-H.5): cleanup baselines + tests obsolètes

feat(sprint-H.3)!: renommage reports_v2/ → reports/

feat(sprint-H.1)!: suppression cli/, llm/, extras/, fixtures.py

feat(sprint-F)!: web/ → interfaces/web/_legacy/ (Phase 9)

feat(sprint-G)!: cli/ → interfaces/cli/_legacy/ (Phase 10)

feat(sprint-E.6)!: suppression complète de picarones/measurements/

feat(sprint-C)!: pipelines/ → adapters/legacy_pipelines/ (top-level supprimé)

feat(8): importers IIIF/Gallica/eScriptorium → adapters/corpus/

feat(migration): Phase 7.B.2 — PipelineRunner.run délègue à PipelineExecutor

feat(migration): Lots H + I + J — statistics, htr_united/huggingface, MetricsResult

feat(migration): Lot G (partiel) — core/{diff_utils, xml_utils} supprimés

feat(migration): Lot F — picarones/report/ → reports_v2/ (suppression complète)

feat(migration): Lot E — engines/ + modules/ → adapters/legacy_*/ (suppression)

feat(migration): Lot D — measurements/{34 shims plats} → evaluation/metrics/

feat(migration): Lot C — core.{results,corpus,pipeline} → evaluation/

feat(migration): Lot B — core.{metric_registry,metric_hooks,metrics} → evaluation/

feat(migration): Lot A — core.{modules,facts} → domain/, suppression des shims

feat(migration): Phase 7.A.1 — engines/base.py vers evaluation/engines/base.py

test(architecture): bump BROKEN_PATHS_BASELINE to 74

refactor(measurements): split runner.py (1019 → 6 sub-modules) by concern

fix(zero-debt): éliminer toute la dette technique actionnable identifiée

refactor(measurements): split statistics.py (1128 → 8 sub-modules) by family

test(architecture): 4 invariants structurels contre la dérive silencieuse