Changelog

bump @openpkg-ts/extract ^0.19.0 -> ^0.23.0, @openpkg-ts/spec -> ^0.23.0

feat(cli): add stale refs to markdown report, split coverage sections

• Pass staleRefs to output/stats pipeline
• Add stale references section to markdown report
• Split exports into "Undocumented" (0%) and "Partial Coverage" (1-99%) sections
• Add reportUrl linking for "X more" overflow links
• Include staleRefs in JSON report output

refactor(sdk): use SpecTag.param for param parsing, bump openpkg-ts deps

• utils.ts: rewrite extractParamFromTag to use SpecTag.param field directly
• param-drift.ts: pass full SpecTag to extractParamFromTag
• index.ts: remove normalizeParamName export (unused)
• cli/writer.ts: use findProjectRoot for cleaner relative paths
• bump @openpkg-ts/extract ^0.18.0 -> ^0.19.0 (root, sdk)
• bump @openpkg-ts/spec ^0.12.0 -> ^0.19.0 (sdk, cli, web)

feat(sdk): add project root detection for monorepo .doccov dir placement

• Add findProjectRoot() and getDoccovDir() utils to SDK
• Walk up from cwd to find .git, pnpm-workspace, or workspaces field
• Ensures .doccov/ is always at repo root, not inside subpackages
• CLI uses SDK's getDoccovDir for cache, history, spec, and reports

fix(cli): suppress noisy external type diagnostics from check output

• Add code field to Diagnostic, SpecDiagnostic, and CachedDiagnostic interfaces
• Preserve diagnostic codes from @openpkg-ts/extract through SDK pipeline
• Filter out EXTERNAL_TYPE_* info diagnostics in CLI check command
• Bump cache version to 1.3.0