* fix(app): preserve file line endings and UTF-8 BOM
* refactor(app): simplify line ending preservation
Let the editor parse newline variants and serialize with the file's first separator. Mixed-ending files become uniform on edit without a separate normalization layer.
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Co-authored-by: Mohamed Boudra <boudra.moha@gmail.com>
* fix(app): open chat file links at referenced lines
Pass chat file locations through the editable CodeMirror path so opening a reference selects and scrolls to its requested line. Cover the real assistant-link flow with a browser regression.
* fix(app): repeat chat file navigation
Track file navigation separately from stable tab identity so reopening the same path and line recenters both editable and read-only panes. Extend the browser regression to cover moving away and clicking the same link again.
* test(app): stabilize repeated file link navigation
* feat(files): edit workspace files on web
Keep source buffers synchronized with host file changes and require an explicit overwrite or reload when revisions diverge.
* feat(panels): surface and protect modified tabs
Expose tooltip and modification state through the generic panel boundary so tabs can show stable metadata and guard every close route consistently.
* fix(tests): use portable fake timeout handle
* fix(files): harden editor conflict handling
Preserve modified panel state across tab eviction, use precise revisions for optimistic writes, coalesce concurrent file watchers, and localize the editor interface.
* fix(files): close editor concurrency gaps
Coalesce clean reloads, preserve subscriber identities and file permissions, suspend pending saves during close confirmation, and carry precise revisions through file reads.
* test(files): expect read revision metadata
