feat: complete DM pairing codes with channel adapters, gateway handlers, and TUI command (Tier 4 feature 4)

src/frontends/tui/commands.ts

@@ -11,6 +11,7 @@ export type Command =
   | { type: 'backend'; provider?: string }
   | { type: 'login'; provider?: string }
   | { type: 'transfer'; target: string }
+  | { type: 'pair'; action?: 'generate' | 'list' | 'revoke'; args?: string }
   | { type: 'message'; content: string };
 
 export function parseCommand(input: string): Command | null {
@@ -99,6 +100,19 @@ export function parseCommand(input: string): Command | null {
     return { type: 'login', provider: provider || undefined };
   }
 
+  // Pair
+  if (trimmed === '/pair' || trimmed === '/pair list') {
+    return { type: 'pair', action: 'list' };
+  }
+  if (trimmed === '/pair generate' || trimmed.startsWith('/pair generate ')) {
+    const label = trimmed.slice('/pair generate'.length).trim() || undefined;
+    return { type: 'pair', action: 'generate', args: label };
+  }
+  if (trimmed.startsWith('/pair revoke ')) {
+    const args = trimmed.slice('/pair revoke '.length).trim();
+    return { type: 'pair', action: 'revoke', args };
+  }
+
   // Regular message
   return { type: 'message', content: trimmed };
 }
@@ -111,6 +125,9 @@ Commands:
   /model <tier> <p/m>    Change tier's provider/model (e.g. /model default anthropic/claude-sonnet-4)
   /backend [provider]    Show or switch local backend (ollama, llamacpp)
   /login [provider]      Authenticate with GitHub
+  /pair                  List pending pairing codes and approved senders
+  /pair generate [label] Generate a new DM pairing code
+  /pair revoke <ch> <id> Revoke an approved sender
   /reset, /clear, /new   Clear conversation history
   /compact               Compact conversation history
   /usage                 Show token usage and estimated cost
@@ -139,6 +156,7 @@ export const SLASH_COMMANDS = [
   '/fullscreen',
   '/fs',
   '/login',
+  '/pair',
   '/transfer',
   '/quit',
   '/exit',
@@ -159,6 +177,7 @@ export const COMMAND_TOOLTIPS: Record<string, string> = {
   '/fullscreen': 'Switch to fullscreen mode',
   '/fs': 'Switch to fullscreen mode',
   '/login': 'Authenticate with GitHub (OAuth device flow)',
+  '/pair': 'Generate/list/revoke DM pairing codes',
   '/transfer': 'Transfer session to another frontend',
   '/quit': 'Exit TUI',
   '/exit': 'Exit TUI',