refactor: remove GMAIL_CHANNEL_ENABLED env flag from add-gmail skill

Channel vs tool-only is now a code-level decision at skill apply time.
If the user chose channel mode, GmailChannel is wired unconditionally.
If tool-only, no channel code is added. No runtime flag needed.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

.claude/skills/add-gmail/modify/src/config.ts

@@ -1,74 +0,0 @@
-import os from 'os';
-import path from 'path';
-
-import { readEnvFile } from './env.js';
-
-// Read config values from .env (falls back to process.env).
-// Secrets are NOT read here — they stay on disk and are loaded only
-// where needed (container-runner.ts) to avoid leaking to child processes.
-const envConfig = readEnvFile([
-  'ASSISTANT_NAME',
-  'ASSISTANT_HAS_OWN_NUMBER',
-  'GMAIL_CHANNEL_ENABLED',
-]);
-
-export const ASSISTANT_NAME =
-  process.env.ASSISTANT_NAME || envConfig.ASSISTANT_NAME || 'Andy';
-export const ASSISTANT_HAS_OWN_NUMBER =
-  (process.env.ASSISTANT_HAS_OWN_NUMBER || envConfig.ASSISTANT_HAS_OWN_NUMBER) === 'true';
-export const POLL_INTERVAL = 2000;
-export const SCHEDULER_POLL_INTERVAL = 60000;
-
-// Absolute paths needed for container mounts
-const PROJECT_ROOT = process.cwd();
-const HOME_DIR = process.env.HOME || os.homedir();
-
-// Mount security: allowlist stored OUTSIDE project root, never mounted into containers
-export const MOUNT_ALLOWLIST_PATH = path.join(
-  HOME_DIR,
-  '.config',
-  'nanoclaw',
-  'mount-allowlist.json',
-);
-export const STORE_DIR = path.resolve(PROJECT_ROOT, 'store');
-export const GROUPS_DIR = path.resolve(PROJECT_ROOT, 'groups');
-export const DATA_DIR = path.resolve(PROJECT_ROOT, 'data');
-export const MAIN_GROUP_FOLDER = 'main';
-
-export const CONTAINER_IMAGE =
-  process.env.CONTAINER_IMAGE || 'nanoclaw-agent:latest';
-export const CONTAINER_TIMEOUT = parseInt(
-  process.env.CONTAINER_TIMEOUT || '1800000',
-  10,
-);
-export const CONTAINER_MAX_OUTPUT_SIZE = parseInt(
-  process.env.CONTAINER_MAX_OUTPUT_SIZE || '10485760',
-  10,
-); // 10MB default
-export const IPC_POLL_INTERVAL = 1000;
-export const IDLE_TIMEOUT = parseInt(
-  process.env.IDLE_TIMEOUT || '1800000',
-  10,
-); // 30min default — how long to keep container alive after last result
-export const MAX_CONCURRENT_CONTAINERS = Math.max(
-  1,
-  parseInt(process.env.MAX_CONCURRENT_CONTAINERS || '5', 10) || 5,
-);
-
-function escapeRegex(str: string): string {
-  return str.replace(/[.*+?^${}()|[\]\\]/g, '\\$&');
-}
-
-export const TRIGGER_PATTERN = new RegExp(
-  `^@${escapeRegex(ASSISTANT_NAME)}\\b`,
-  'i',
-);
-
-// Timezone for scheduled tasks (cron expressions, etc.)
-// Uses system timezone by default
-export const TIMEZONE =
-  process.env.TZ || Intl.DateTimeFormat().resolvedOptions().timeZone;
-
-// Gmail configuration
-export const GMAIL_CHANNEL_ENABLED =
-  (process.env.GMAIL_CHANNEL_ENABLED || envConfig.GMAIL_CHANNEL_ENABLED) === 'true';

.claude/skills/add-gmail/modify/src/config.ts.intent.md

@@ -1,20 +0,0 @@
-# Intent: src/config.ts modifications
-
-## What changed
-Added configuration exports for Gmail channel support.
-
-## Key sections
-- **readEnvFile call**: Must include `GMAIL_CHANNEL_ENABLED` in the keys array. NanoClaw does NOT load `.env` into `process.env` — all `.env` values must be explicitly requested via `readEnvFile()`.
-- **GMAIL_CHANNEL_ENABLED**: Boolean feature flag — when `true`, the Gmail channel is connected and polls for inbound emails. When `false` (default), Gmail is available as a tool only (agent can read/send emails when asked from other channels).
-
-## Invariants
-- All existing config exports remain unchanged
-- New Gmail keys are added to the `readEnvFile` call alongside existing keys
-- New exports are appended at the end of the file
-- No existing behavior is modified — Gmail config is additive and minimal
-- Both `process.env` and `envConfig` are checked (same pattern as `ASSISTANT_NAME`)
-
-## Must-keep
-- All existing exports (`ASSISTANT_NAME`, `POLL_INTERVAL`, `TRIGGER_PATTERN`, etc.)
-- The `readEnvFile` pattern — ALL config read from `.env` must go through this function
-- The `escapeRegex` helper and `TRIGGER_PATTERN` construction

.claude/skills/add-gmail/modify/src/index.ts

@@ -3,7 +3,6 @@ import path from 'path';
 
 import {
   ASSISTANT_NAME,
-  GMAIL_CHANNEL_ENABLED,
   IDLE_TIMEOUT,
   MAIN_GROUP_FOLDER,
   POLL_INTERVAL,
@@ -451,11 +450,9 @@ async function main(): Promise<void> {
   channels.push(whatsapp);
   await whatsapp.connect();
 
-  if (GMAIL_CHANNEL_ENABLED) {
-    const gmail = new GmailChannel(channelOpts);
-    channels.push(gmail);
-    await gmail.connect();
-  }
+  const gmail = new GmailChannel(channelOpts);
+  channels.push(gmail);
+  await gmail.connect();
 
   // Start subsystems (independently of connection handler)
   startSchedulerLoop({

.claude/skills/add-gmail/modify/src/index.ts.intent.md

@@ -2,24 +2,21 @@
 
 ## What changed
 
-Added Gmail as a channel option alongside WhatsApp (and any other channels).
+Added Gmail as a channel.
 
 ## Key sections
 
 ### Imports (top of file)
 
 - Added: `GmailChannel` from `./channels/gmail.js`
-- Added: `GMAIL_CHANNEL_ENABLED` from `./config.js`
 
 ### main()
 
-- Added: conditional Gmail channel creation after WhatsApp:
+- Added Gmail channel creation:
   ```
-  if (GMAIL_CHANNEL_ENABLED) {
-    const gmail = new GmailChannel(channelOpts);
-    channels.push(gmail);
-    await gmail.connect();
-  }
+  const gmail = new GmailChannel(channelOpts);
+  channels.push(gmail);
+  await gmail.connect();
   ```
 - Gmail uses the same `channelOpts` callbacks as other channels
 - Incoming emails are delivered to the main group (agent decides how to respond, user can configure)
@@ -31,7 +28,7 @@ Added Gmail as a channel option alongside WhatsApp (and any other channels).
 - State management (loadState/saveState) is unchanged
 - Recovery logic is unchanged
 - Container runtime check is unchanged
-- WhatsApp and any other channel creation is untouched
+- Any other channel creation is untouched
 - Shutdown iterates `channels` array (Gmail is included automatically)
 
 ## Must-keep