* refactor: consolidate coercion ownership
Centralize four canonical coercion helpers, migrate exact core and plugin duplicates through narrow Plugin SDK facades, and enforce declaration and plugin-normalization ownership boundaries.
The sweep adds eight focused SDK exports while deleting more production and tooling code than it adds. User-visible behavior is unchanged except for safer equivalent object and UI parsing at existing boundaries.
* fix: guard integer option ownership
Register resolveIntegerOption with the canonical function owner and extend the declaration-guard fixture so future local duplicates fail validation.
* fix: keep integer helpers on numeric facade
Remove the unshipped duplicate string-coerce exports and route every affected plugin consumer through the existing number-runtime contract.
* fix: point numeric coercion to number runtime
Make boundary and declaration diagnostics recommend the canonical numeric facade, with failing-before coverage for both guidance paths.
* feat(linux): add node device capabilities
* fix(linux-node): actionable pending-approval error + node-host advertise integration test
* fix(linux-node): map geoclue access-denied to LOCATION_DISABLED; floor camera maxWidth to avoid zero-height scale
* fix(linux-node): clamp small camera maxWidth to 2 instead of default
* docs(linux-node): clarify where-am-i -t is a process timeout, not update throttle
* refactor(gateway): extract legacy-node filter + rejection hint to fit LOC ratchet; docs-map + deadcode baseline
* fix(gateway): drop now-unused DEFAULT_DANGEROUS_NODE_COMMANDS import after hint extraction
* test(node-host): drop imports orphaned by removed error-code test
Peter Steinberger