v4.3.0

• feat(model): v4.3.0 — the #511 relabel run + the conventions layer's first slice (#512) (f3a4ef2)
• feat(pipeline): wire the reconciler's dormant concordance axes (#478 step 2, re-scoped) (#510) (387276d)
• docs(evals): Overture fill-rate record (#509) (cef4b66)
• chore(hardening): libpostal TLA removal + corrected cycle diagnosis + width gate spec + #480 loader strict-mode/resume-drift (#508) (3e8f104)
• feat(docs): interactive docs — embeddable components, guided tour, training charts, loading indicators (a2ea72b)
• feat(docs): staged loading indicators with parse-step progress in PipelineExplorer and demo (680d816)
• blog(draft): four numbers tried to lie to us — the night-9→10 arc (draft:true, operator review) (#504) (1a257e6)
• eval(#487): real intersection eval from TIGER EDGES + v4.2.0 baseline (0.0/0.0) (#507) (0231692)
• feat(policy): config-file loading with total loud validation (#478 step 1) (#506) (0100d83)
• fix(eval): NAD holdout composite-gold bug — and the #498 refutation it caused (#505) (14eb2d6)
• feat(eval): gaz/anchor-fed arenas — v4.2.0 true config sweeps 41/71/18, beats v0 on clean (first ever) + night-10 postmortem (#503) (cb7ccea)
• chore(training): REPRODUCIBILITY.md + export/quant toolchain verifier (#480 safe parts) (#502) (c70328d)
• docs(releasing): the demo serves R2, not HF — the mandatory second leg (night-10 discovery) (#501) (f4b3d8e)
• chore(parser): hardening part 1 — one decode path, repairs-in-both, policy tests, loud lexicon validation (#481) (#500) (a24d436)
• feat(data): postal_city alias table (#475) + CORRECTION to the NAD holdout note (#499) (88f7a75)
• feat(resolver): address-point tier — street-level exact points (VT: coord p50 3.4km → 0.0km @ 93.1% hit rate) (#497) (4c7c91a)
• eval(#472): US source-independent holdout from NAD-only Overture rows + first numbers (#496) (f9c9159)
• feat(eval): promotion-gate.sh — one enforced gate runner + machine verdict (#479) (#495) (08a158d)
• feat(docs): integrate LoadingIndicator into DemoEmbed, PipelineExplorer, GuidedTour, TrainingCharts (fffa3af)