* feat(app): preview HTML files in the file pane
Renders .html/.htm files as a page in the file pane, with the same
Preview/Source toggle Markdown already has. The main use is reading
richer visual plans an agent wrote as a self-contained HTML page.
A preview is a viewer, not a browser. Each document is prefixed with a
doctype and a strict policy, so the policy is always the first element
and always lands in the parser-created head: inline script and style
run, and remote subresources, fetch, XHR, WebSocket, beacon, and form
posts are refused. The frame has an opaque origin, so it cannot reach
the app's DOM and storage and cookie APIs throw inside it.
One gap is left on web and cannot be closed there: a sandboxed
document may navigate itself, and no CSP directive in current browsers
prevents it -- navigate-to was dropped from CSP3 and is unenforced, and
meta refresh needs no script (both verified against the Chromium the
app ships against). The opaque origin bounds it to the page's own
contents, and SECURITY.md documents it. Native narrows it further by
refusing navigation after the initial document, with the caveat that
the decision runs in app JS.
Self-contained pages only -- a page that pulls a CDN script renders
unstyled, and Source still shows everything.
* fix(app): harden HTML preview behavior and tests
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Co-authored-by: Nicholas Salgueiro <nicholas.salgueiro@britecore.com>
Co-authored-by: Mohamed Boudra <boudra.moha@gmail.com>
CodeMirror uses a contenteditable surface, which the split-pane focus filter treated as exempt. Let editor interactions claim pane focus just like composer text inputs do.
* 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
The web UI font rule only targeted the app root, so portaled content fell back to the default font. Extend the rule to the shared overlay root and cover it with a browser regression test.
* 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
