Merge pull request #611: feat(terminal): copy OSC 52 clipboard writes from the PTY into the browser clipboard

CLAUDE.md

@@ -288,6 +288,8 @@ Codeman is a Claude Code session manager with web interface and autonomous Ralph
 
 **Auto Copy (copy-on-select)** (`autoCopySelection`, per-device, default OFF): a finished terminal selection lands on the clipboard with no keystroke. ⚠️ Copy at the END of a gesture, never in `onSelectionChange` (per-cell); it only arms `_autoCopyPending` and a document-level `mouseup` flushes. ⚠️ The flush must be SYNCHRONOUS in the handler (both clipboard paths need user activation); never defer it to a timer. ⚠️ Touch needs its own calls from `_endTouchSelectionGesture()`/`_selectTouchSelectionLine()` (no mouseup arrives). ⚠️ Unlike `copyTerminalSelection()`, never clear the selection or focus the terminal; restore prior focus. Guards are pure in `decideAutoCopy()` (constants.js, 1M-char cap, refused not truncated). Tests: `test/terminal-auto-copy.test.ts`. → [architecture-invariants#auto-copy-copy-on-select](docs/architecture-invariants.md#auto-copy-copy-on-select)
 
+**OSC 52 clipboard** (`_installOsc52Clipboard`, terminal-ui.js; main terminal + every `TerminalTile`): a program in the PTY (Claude Code's `/copy`, tmux yanks, vim) sets the browser clipboard with `ESC ] 52`. ⚠️ Writes only: a `52;?` read query is always refused, never answered. ⚠️ A replay must never copy: `chunkedTerminalWrite` strips every OSC 52 (`OSC52_STRIP_RE`, constants.js) because xterm parses after `_isLoadingBuffer` is cleared, so the flag alone does not hold; a tile gates on its own `_bufferLoading`, which does. ⚠️ One copy arrives up to three times (Claude's own OSC 52, `tmux load-buffer -w`, set-clipboard forwarding), so identical text within `OSC52_DEDUPE_MS` is dropped. ⚠️ Every tab on the session receives it; only the focused one opens the manual-copy fallback. Tests: `test/terminal-osc52-clipboard.test.ts` (replays drive the real `chunkedTerminalWrite` over `@xterm/headless`).
+
 **Ctrl+V paste trap** (`image-input.js`): `Ctrl+V` routes through `_handleImagePaste()`, which focuses a hidden `contenteditable` trap and reads the clipboard from the paste event landing there; images upload and their paths are typed in, text goes through `terminal.paste()` so bracketed-paste markers survive. ⚠️ **The trap must consume exactly ONE paste event** (Firefox delivers two per keypress: the `execCommand('paste')` event and the keydown's default action); the one-shot flag lives on the trap, never on a browser check. ⚠️ Do not remove the `execCommand('paste')` call: on some mobile engines it is the only route into the trap, and the trap is the only place image blobs are read. Tests: `test/image-paste-trap.test.ts`. → [architecture-invariants#terminal-paste-ctrlv](docs/architecture-invariants.md#terminal-paste-ctrlv)
 
 **Terminal scrollback strip + wheel/touch forwarding**: codex/claude/gemini get the FULL strip (alt-screen, `3J`, mouse DECSETs); tmux-backed opencode gets the MIDDLE strip (alt-screen toggles + mouse DECSETs, `3J` kept); every other tmux-backed mode (shell/antigravity/pi/grok/deepseek/omp) gets the NARROW strip (alt-screen toggles only). Table: `CliCapabilities.altScreen` JSDoc, pinned in test/claude-scrollback-strip.test.ts. ⚠️ Gated on `useMux`: direct-PTY sessions must keep the alt screen. Wheel and touch forward to the CLI for **claude ≥ 2.1.187 ONLY, and only while it has mouse tracking on** (`cliMouseTracking`: fullscreen claude sets it, its default inline renderer does not and scrolls locally like codex); ⚠️ never re-add codex without a fresh measurement (it ignores SGR wheel reports). ⚠️ `getClaudeCliVersion()` must never cache a FAILED probe. ⚠️ Hand-report clicks only while the CLI has mouse tracking on: `_shouldReportMouseToCli()` gates all three report sites on `cliMouseTracking` (from `_recordStrippedMouseMode()`, session.ts), or a plain shell prints the reports as literal text. ⚠️ A `TerminalTile` (grid tile, split Pane B) forwards the wheel as SGR reports, pages it and reports clicks through these SAME gates with itself as the target (its terminal, its session, never `activeSessionId`), and scrolls Shift+wheel itself (xterm makes it a horizontal no-op); never copy the mode lists into terminal-tile.js. Read `_logScrollRouting()` before diagnosing a scroll report. → [architecture-invariants#terminal-scrollback-strip-flavors-and-wheeltouch-forwarding](docs/architecture-invariants.md#terminal-scrollback-strip-flavors-and-wheeltouch-forwarding)