v5.4.0

• chore(#924): the v2.3.0-nl-postcode-full training config — the recipe that produced v5.4.0 (#975) (4cadd32)
• Format card. (9b45c9e)
• release(v5.4.0): v2.3.0-nl-postcode model — the #924 NL postcode fix (#974) (1827a0d)
• feat(#924): NL postcode format recognition — the query-shape belt (#973) (3a2719c)
• feat(#924): synth-nl-postcode shard recipe — teach the digits-first NL postcode (#972) (dfb9b44)
• feat(demo): /debug route + in-demo model-visualizer drawer (#941) (#971) (df72b47)
• feat(demo): wire viewport bias — map view (+ optional geolocation) re-ranks namesakes (#938) (#970) (2982dcd)
• feat(calibration): re-fit isotonic tables on v5.3.0 — held-out ECE 0.070 → 0.002 (#969) (2360cdc)
• docs(#912): close the bare-famous-city ranking bug — 4/5 pass, Åbo re-scoped (#968) (54874b6)
• feat(#949): fr.bare_street_intact promotion-gate floor — the class v5.2.0 regressed silently (#967) (7de4e51)
• ci(#963): scheduled production demo smoke — version parity is not functional parity (#966) (a2395d4)
• fix(#961): joint country recovery — the #942 floor no longer trusts the caller's defaultCountry (#964) (2fd8926)
• chore(gauntlet): retire the four passing #831 xfails; track v5.3.0's two #829 shapes; addendum #894 correction (#962) (74d6e22)
• docs(reviews): 2026-07-04 addendum — R3 corrected, v5.2.0 grading claim amended, the evening's arcs (#960) (6a7bed7)
• fix(demo): route createWOFResolver through @mailwoman/resolver/resolve — the #861 cascade never executed in production (#959) (f9f19ea)
• feat(demo): manifest wire-key migration — house casing inside, one tolerant boundary (#958) (4a71e1b)
• fix(demo): releases.json wire keys — batch-A sweep disabled the WOF cascade AND the FST since Jul 1 (#957) (37f84d5)
• feat(#370): postcodeConsistency default ON + the coordinate-convention epoch — operator promote 2026-07-04 (#956) (0010bb8)
• fix(demo): createDbWorker — the batch-B acronym sweep renamed an EXTERNAL export, silently killing the street tier (#955) (deaa396)
• eval(#945): --prefer-locality-coord — score under production's coordinate convention (#954) (5972804)
• chore(evals): v5.3.0 ledger row (cadence entry #2) + the operator-exception escape (#953) (0fd6bca)
• docs(reviews): 2026-07-04 re-railing retrospective — the 07-01 review's four-week bar, three days later (#952) (b9896c9)