Fix/retire kitty ctrlv map xwayland (#3)

* fix: retire kitty ctrl+v interception — XWayland breaks router tmux detection

Under XWayland kitty, `kitten @ ls` reports is_focused=false for every OS
window and empty foreground_processes, so kitty-paste-router.sh's
focused_window_is_tmux() can never succeed. Every Ctrl+V took the slow
fallthrough (background launch, seconds late under load) and the late
second fire landed outside the daemon's 2.5s dedup window — journal shows
identical 162-byte text pastes 4s apart (pane %23, 15:14:50 + 15:14:54).

Fix: kitty must not bind ctrl+v at all. tmux's own `bind -n C-v` is the
single handler (~5ms, pane id from the pressing client — also kills the
wrong-pane hazard of the router's target-less `tmux display-message`).
Non-tmux kitty windows: raw 0x16 reaches Claude Code, which reads the
clipboard itself via the wl-paste shim; plain shells use ctrl+shift+v.

- keybindings.canonical: kitty ctrl+v -> UNBOUND (new keyword)
- flashpaste-keybindings-check.sh: support UNBOUND (binding must not exist)
- kitty-paste-router.sh: retired-status header + clip-pipeline-log tracing
  (it was the only paste path with zero logging)
- tests/keybindings-check.test.sh: cover UNBOUND pass/violation + keep
  positive-rule and literal-+ coverage via fixture canonicals

* fix: SC1087 in keybindings-check — brace ${key_re} before [[:space:]]

shellcheck -S warning (CI gate) parses $key_re[[:space:]] as an array
expansion and errors. Introduced with the checker in PR #1; this was the
shellcheck regression that turned main's Lint job red. Braces quiet it
with no behavior change (tests 6/6, live check consistent).

* add

Author: NagyVikt

.omx/state/active-sessions/mcp-105938.json

@@ -0,0 +1,17 @@
+{
+  "schemaVersion": 1,
+  "repoRoot": "/home/deadpool/Documents/flashpaste",
+  "branch": "main",
+  "taskName": "Session start: mcp-connect",
+  "latestTaskPreview": "Session start: mcp-connect",
+  "agentName": "unknown",
+  "cliName": "unknown",
+  "worktreePath": "/home/deadpool/Documents/flashpaste",
+  "taskMode": "",
+  "openspecTier": "",
+  "taskRoutingReason": "colony hook cwd binding",
+  "startedAt": "2026-06-10T10:08:41.538Z",
+  "lastHeartbeatAt": "2026-06-10T10:08:41.538Z",
+  "state": "working",
+  "sessionKey": "mcp-105938"
+}

.omx/state/active-sessions/mcp-1614506.json

@@ -0,0 +1,17 @@
+{
+  "schemaVersion": 1,
+  "repoRoot": "/home/deadpool/Documents/flashpaste",
+  "branch": "fix/paste-double-dedup-window-and-kitty-socket",
+  "taskName": "Session start: mcp-connect",
+  "latestTaskPreview": "Session start: mcp-connect",
+  "agentName": "unknown",
+  "cliName": "unknown",
+  "worktreePath": "/home/deadpool/Documents/flashpaste",
+  "taskMode": "",
+  "openspecTier": "",
+  "taskRoutingReason": "colony hook cwd binding",
+  "startedAt": "2026-06-10T14:37:26.452Z",
+  "lastHeartbeatAt": "2026-06-10T14:37:26.452Z",
+  "state": "working",
+  "sessionKey": "mcp-1614506"
+}

.omx/state/active-sessions/mcp-1637503.json

@@ -0,0 +1,17 @@
+{
+  "schemaVersion": 1,
+  "repoRoot": "/home/deadpool/Documents/flashpaste",
+  "branch": "main",
+  "taskName": "Session start: mcp-connect",
+  "latestTaskPreview": "Session start: mcp-connect",
+  "agentName": "unknown",
+  "cliName": "unknown",
+  "worktreePath": "/home/deadpool/Documents/flashpaste",
+  "taskMode": "",
+  "openspecTier": "",
+  "taskRoutingReason": "colony hook cwd binding",
+  "startedAt": "2026-06-10T09:29:57.216Z",
+  "lastHeartbeatAt": "2026-06-10T09:29:57.216Z",
+  "state": "working",
+  "sessionKey": "mcp-1637503"
+}

.omx/state/active-sessions/mcp-1734424.json

@@ -0,0 +1,17 @@
+{
+  "schemaVersion": 1,
+  "repoRoot": "/home/deadpool/Documents/flashpaste",
+  "branch": "main",
+  "taskName": "Session start: mcp-connect",
+  "latestTaskPreview": "Session start: mcp-connect",
+  "agentName": "unknown",
+  "cliName": "unknown",
+  "worktreePath": "/home/deadpool/Documents/flashpaste",
+  "taskMode": "",
+  "openspecTier": "",
+  "taskRoutingReason": "colony hook cwd binding",
+  "startedAt": "2026-06-10T09:44:37.598Z",
+  "lastHeartbeatAt": "2026-06-10T09:44:37.598Z",
+  "state": "working",
+  "sessionKey": "mcp-1734424"
+}