* fix(mac): move device auth tokens to shared SQLite state
* fix(mac): fail identity migration when source auth vanishes mid-read
Missing-file tolerance now applies only to the first observation; a disappearance after the auth file was observed fails the migration so the claimed identity survives for retry instead of committing without its credentials.
* fix(ios): validate auth scope UTF-8 encoding
* fix(ios): isolate SQLite auth profiles
* chore(ios): refresh native source inventory
* fix(mac): keep device auth in the shared token table
* test(mac): pin shared-key token cache semantics
* refactor(infra): move exec approvals into the shared SQLite state DB
Delete the file-runtime exec-approvals store (exec-approvals.json + .lock
sidecar machinery) on both runtimes and make the reserved
exec_approvals_config singleton row canonical. Doctor owns the one-time
import with claim/verify/receipt discipline; runtime fails closed with a
doctor instruction while un-migrated legacy state exists. The wire CAS
contract, socket semantics, and gateway auth-token derivations are
unchanged. Kills the #113929 lock-contention bug class structurally and
nets around -2.9k lines.
* fix(infra): green CI gates and retire file-era exec approvals tests
Break the migration-type import cycle with a leaf contract, regenerate the
plugin-SDK API and native i18n baselines for the intentional surface change,
drop unused exports, and replace the macOS file-era approvals test suite with
SQLite-backed behavior coverage per the obsolete-internals test policy.
* chore: green max-lines ratchet, native i18n baseline, and unused-export scan
