Qualify capture LF normalization to linked transcripts

[Chris0Jeky]

Summary

Close the final wording residual left after #2933. Capture reconciliation compares line endings without rewriting stored source text, but only linked-transcript correction normalizes the queue projection to LF. Ordinary suggestion edits preserve submitted bytes.

This change narrows both the helper comment and the public capture API guide to that actual boundary. It keeps the already-delivered durable/legacy export field contract and the six direct CaptureTextComparison cases unchanged.

Scope and behavior

• No runtime, storage, export, reconciliation, allocation, endpoint, or schema behavior changes.
• CaptureTextComparison.Equivalent remains byte-significant apart from line-ending normalization.
• Initial creation may still retain submitted line endings in both representations.
• Durable exports still use durableCapture.sourceAssets[].text; queue fallback remains legacySource.text only when no durable capture exists.
• The branch is exactly two commits and two files ahead of main: the helper explanation and docs/api/CAPTURE.md.

Verification

Exact head: 5b70d1f5ca7a73d15538f882af48c70b831d2107.

• Smart CI Self-Test run 34911547906: success.
• CI Extended run 34911548088: success.
• Main CI run 34911548083: all 18/18 jobs are terminal with no failure, queued, in-progress, or null-conclusion job. The GitHub Actions parent run still reports in_progress, which is a workflow-finalization/API lag rather than an executing or failed job.
• Covered lanes include docs governance, release contract, secret scanning, dependency/security, SAST, architecture, source-launcher, frontend lint/typecheck/build/PWA, backend/API tests, and Windows helper validation.

No local execution result is claimed from this connector environment; the evidence above is the exact hosted head.

Closes #2912

[chatgpt-codex-connector]

Codex Review Summary

This comment shows the latest Codex review activity on this pull request.

Review	Status	Commit	Review trigger
📝 Code Review	✅ Completed 2026-09-15T00:26:27.361050Z	5b70d1f	Draft marked ready

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