Remote one-tap approval was blind (you'd tap Approve without seeing Claude wants
to run `rm -rf` or rewrite a config). The pending tool's actual command / diff now
renders above the approval bar, on every attached device, riding the same broadcast
+ late-joiner rails as the existing `gate` field.
- src/http/approval-preview.ts (new, pure, never-throws): deriveApprovalPreview —
Bash → command; Edit/Write/MultiEdit/NotebookEdit → a synthetic DiffFile; else null.
Every line sanitized via sanitizeField (strips control/ANSI); caps 40 lines /
200 chars/line / 4KB (security limits, UTF-8-safe byte clamp).
- src/types.ts: additive optional `preview?: ApprovalPreview` on the status
ServerMessage + handleHookEvent (older clients ignore it).
- src/server.ts /hook/permission: derive preview from tool_input, store on the
PendingApproval entry, re-send to late joiners exactly like `gate`.
- manager.ts threads it; public/tabs.ts renderApprovalPreview (command → <pre>
textContent; diff → reused innerHTML-free renderDiffFile). Unknown tools /
plan gates fall back to today's name-only bar.
Attacker-influenced tool input → rendered via textContent/diff-renderer only,
never innerHTML. Verified independently: typecheck + build:web clean, 1692 pass.
Terminal output URLs and file paths (e.g. src/app.ts:42) are now tappable — the
walk-away device is a phone, so this removes soft-keyboard copy gymnastics.
- public/link-paths.ts (new, pure): findPathMatches — links tokens with a '/',
a :line suffix, or a code extension (src/app.ts:42, /abs/main.rs:10, README.md)
while rejecting example.com / v1.2.3 / 12:34 / URL tails.
- terminal-session.ts: hardened URL handler (scheme allowlist http/https/mailto +
window.open noopener,noreferrer, blocks javascript:/data:/file:) replacing the
addon default; a path link provider → openPath() POSTs {file,line} to
/open-in-editor (resolves rel paths against the OSC-7 cwd; in-flight guard).
- src/http/editor.ts: additive openFileInEditor + isGotoEditor (--goto file:line
only for goto-capable editors; execFile, no shell). openInEditor untouched.
- src/server.ts: /open-in-editor branches on body.file vs body.path (same CSRF guard).
Deviation from the "no server change" brief: an additive openFileInEditor was
required because the existing route only opens directories, not file:line (Option A
in docs/plans/w1-clickable-links.md). Backward-compatible; src/types.ts untouched.
Verified independently: typecheck + build:web clean, 1661 tests pass (link-paths
95%+ cov). Note: xterm buffer-row indexing (getLine(n-1)/range.y=n) is asserted in
jsdom but merits a real-browser smoke check.
