* [AI] fix(memory-wiki): gracefully handle unparsable YAML frontmatter in vault scans (#96125)
toWikiPageSummary now catches YAML parse errors during vault-wide scans
(compile/lint/query/status) and returns a degraded WikiPageSummary with
frontmatterError set instead of letting the error propagate through
readPageSummaries -> compileMemoryWikiVault, which previously caused one
bad page to crash the entire vault.
Edit paths (apply, chatgpt-import) still throw on bad frontmatter to
prevent silent metadata loss on write.
- markdown.ts: add frontmatterError field to WikiPageSummary, extract
splitWikiFrontmatterBlock, catch YAML.parse in toWikiPageSummary
- lint.ts: add invalid-frontmatter lint code, skip frontmatter-derived
checks when frontmatterError is present
- markdown.test.ts: test degraded parse preserves body, empty frontmatter
- lint.test.ts: test invalid-frontmatter lint on broken page, healthy
page unaffected
Related to #96125
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
* fix(memory-wiki): isolate invalid frontmatter scans
* fix(memory-wiki): keep malformed lint reports fail-closed
* fix(memory-wiki): reject non-mapping frontmatter
* fix(memory-wiki): validate generated index targets
---------
Co-authored-by: Claude Opus 4.8 <noreply@anthropic.com>
Co-authored-by: Peter Steinberger <steipete@golden-gate.local>
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