feat(enrichment): unsafe-`any` (TS) counter analyzer

[JSONbored]

New REES local analyzer that counts and locates explicit any type annotations and as any casts newly introduced in TypeScript diffs — a type-safety erosion signal the reviewer can weigh. Pure compute over added lines in .ts/.tsx files, no network. Structural regex only (no type-checker), fail-safe.

Deliverables

• Add UnsafeAnyFinding ({ file, line, kind: 'annotation'|'cast'|'assertion' }) + unsafeAny? key to review-enrichment/src/types.ts
• Create review-enrichment/src/analyzers/unsafe-any.ts: match : any, <any>, as any in added TS lines, ignoring occurrences inside string/comment where cheaply detectable; cap with maxFindings
• Register a local descriptor (category 'quality', cost 'local', requires ['files']) with inline render() in review-enrichment/src/analyzers/registry.ts
• Add review-enrichment/test/unsafe-any.test.ts covering annotation vs cast vs assertion, non-TS files skipped, string/comment false-positive avoidance, and the cap

References

• review-enrichment/src/analyzers/redos.ts (regex-over-added-lines local analyzer with maxLineChars/maxFindings limits)
• review-enrichment/src/analyzers/registry.ts:158-175 (redos descriptor limits shape)
• review-enrichment/src/analyzers/types.ts (AnalyzerCategory 'quality')

Part of #1499.

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size: S · gittensor:feature

[linear-code]

JSO-2134