BLOCO E3 of the god-files campaign. db/models.ts (1250 LOC) mixed six concerns; the
three cleanly-separable ones plus the shared key_value helpers were lifted out verbatim
into a new src/lib/db/models/ subdirectory, leaving the tightly-coupled custom/synced/
flags trio in the host (host now 936 LOC). The host re-exports every moved public symbol
so the module's public API (consumed by ~29 test files + localDb) is unchanged.
- models/shared.ts — asRecord / toNonEmptyString / getKeyValue + JsonRecord (19 LOC)
- models/compat.ts — model-compat overrides + sanitizeUpstreamHeadersMap (249 LOC)
- models/aliases.ts — model-alias CRUD + cascade delete (61 LOC)
- models/mitmAlias.ts — MITM alias get/set (32 LOC)
The custom/synced/flags trio stays in the host because it is genuinely coupled
(flags->getCustomModelRow, flags->readCompatList, custom->removeModelCompatOverride,
synced->getModelIsDeleted, setModelIsHidden->updateCustomModel) — splitting it cleanly
is a follow-up. Dependency DAG is acyclic (verified by check:cycles).
Adds tests/unit/db-models-split.test.ts: characterization of the pure extracted helpers
+ a guard asserting the host preserves its full public export surface.
Validated: typecheck:core, check:cycles (no cycles), 77 existing db/models consumer
tests (db-models-crud/extended/aliases-cascade + 7 more) green, 7 new tests, ESLint,
Prettier, check:file-size (host 936 < frozen 1259; no new violations).
