feat(agent-skill): turn the Codeman agent skill on by default

An absent `agentSkillEnabled` now means on, on the server
(`getAgentSkillEnabled()` reads `!== false`, like `workspaceHooksEnabled`)
and on the page (the App Settings switch loads `!== false`, so a Save of any
other setting no longer writes the old default back). Only an explicit false
turns it off. A partial settings PUT that omits the key leaves it as stored,
since the route merges the request into the file.

The switch's help text says it is on by default, that the copy stays out of
git, and that turning it off removes no copy already written. The shared
route-test mock now defaults to on too, so route tests see what a user sees.

Tests: quick-start against a real server (absent key injects, a partial PUT
keeps it on, an explicit false stays off through a later partial PUT), the
real openAppSettings/saveAppSettings in JSDOM (absent shows on, explicit false
shows off, a Save on a never-touched install sends true and passes the
schema), and the plain create route at the mock's default.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

src/hooks-config.ts

@@ -1666,7 +1666,10 @@ export function agentSkillDirFor(casePath: string, dir: AgentSkillDir): string {
  * Add or remove the Codeman agent skill in `<case>/<dir>/codeman`, where `dir` is the
  * skills directory the session's CLI scans (default: Claude Code's `.claude/skills`;
  * callers resolve it with `agentSkillDir()`), mirroring `applyStatusLineConfig`'s
- * shape. Gated by the synced `agentSkillEnabled` app setting (default OFF).
+ * shape. Gated by the synced `agentSkillEnabled` app setting: default ON since 1.50.0
+ * (an absent key is on, only an explicit false is off; `getAgentSkillEnabled()` in
+ * server.ts), which is safe for a user's repository because the copy ignores itself
+ * in git (`ensureAgentSkillGitignore`).
  *
  * Call-site policy is ADD-ONLY on session create (callers pass `enabled: true` or
  * skip the call), for the statusLine reason: sessions in a repo share one workspace,

src/web/ports/config-port.ts

@@ -17,7 +17,7 @@ export interface ConfigPort {
   getModelConfig(): Promise<{ defaultModel?: string; agentTypeOverrides?: Record<string, string> } | null>;
   getClaudeModeConfig(): Promise<{ claudeMode?: ClaudeMode; allowedTools?: string }>;
   getTerminalHistoryConfig(): Promise<TerminalHistoryConfig>;
-  /** Synced `agentSkillEnabled` app setting (default OFF); gates per-case agent-skill injection. */
+  /** Synced `agentSkillEnabled` app setting (default ON, only an explicit false is off); gates per-case agent-skill injection. */
   getAgentSkillEnabled(): Promise<boolean>;
   /** Synced `workspaceHooksEnabled` app setting (default ON); gates INSTALLING hooks into a session's workspace. */
   getWorkspaceHooksEnabled(): Promise<boolean>;

src/web/public/index.html

@@ -2941,7 +2941,7 @@
                   <div class="set-row" data-search="agent skill codeman api workers codex gemini opencode pi grok deepseek omp antigravity">
                     <div class="set-row-text">
                       <span class="set-row-label">Codeman Agent Skill</span>
-                      <span class="set-row-desc">Write Codeman's agent skill into each new session's folder, where that CLI looks for skills, so the agent in it can start workers in any installed CLI, send them prompts and wait for results. Every CLI except Pi and a plain shell.</span>
+                      <span class="set-row-desc">Write Codeman's agent skill into each new session's folder, where that CLI looks for skills, so the agent in it can start workers in any installed CLI, send them prompts and wait for results. Every CLI except Pi and a plain shell. On by default. The copy ignores itself in git, so your repository never lists it as a new file. Off stops new copies but removes none: <code>codeman skill uninstall --case &lt;name&gt;</code> does that.</span>
                     </div>
                     <label class="switch switch-sm"><input type="checkbox" id="appSettingsAgentSkill"><span class="slider"></span></label>
                   </div>

src/web/public/settings-ui.js

@@ -707,7 +707,9 @@ Object.assign(CodemanApp.prototype, {
     this._applyCodexSettingsVisibility();
     // Claude Permissions settings
     document.getElementById('appSettingsAgentTeams').checked = settings.agentTeamsEnabled ?? false;
-    document.getElementById('appSettingsAgentSkill').checked = settings.agentSkillEnabled ?? false;
+    // Default ON (since 1.50.0), like the workspace hooks below: the server reads an
+    // absent key as on, so the switch must too, or the next Save would write false.
+    document.getElementById('appSettingsAgentSkill').checked = settings.agentSkillEnabled !== false;
     // Default ON: an absent key is a user who has never seen this setting, and OFF
     // for them means no tab alerts in any workspace Codeman did not scaffold.
     document.getElementById('appSettingsWorkspaceHooks').checked = settings.workspaceHooksEnabled !== false;

src/web/routes/session-routes.ts

@@ -978,8 +978,8 @@ export function _paneDeathWatcherCount(): number {
  *
  * `applyAgentSkill` declines two shapes rather than writing through them ('foreign':
  * an unmarked skills/codeman the user authored; 'symlink': the skill dir or its
- * parent is a link). Both were silent: the user flips `agentSkillEnabled` on, nothing
- * appears in the case, and there is nowhere to look for why. The ordinary outcomes
+ * parent is a link). Both were silent: `agentSkillEnabled` is on (the default since
+ * 1.50.0), nothing appears in the case, and there is nowhere to look for why. The ordinary outcomes
  * ('installed'/'refreshed'/'unchanged') stay unlogged since they would print on every
  * single session create.
  *

src/web/server.ts

@@ -2450,11 +2450,15 @@ export class WebServer extends EventEmitter {
     return resolveTerminalHistoryConfig(settings);
   }
 
-  // Whether the Codeman agent skill is injected into cases on Claude session create
-  // (synced `agentSkillEnabled` setting, default OFF; docs/agent-control-plan.md §2).
+  // Whether the Codeman agent skill is injected into a session's workspace on create
+  // (synced `agentSkillEnabled` setting; docs/agent-control-plan.md §2). Default ON
+  // since 1.50.0, like `workspaceHooksEnabled` below: an absent key means a user who
+  // has never touched the switch, and only an explicit false turns it off. The copy
+  // ignores itself in git (`.gitignore` of `*`, see installAgentSkillInto), so the
+  // default leaves a user's `git status` clean.
   private async getAgentSkillEnabled(): Promise<boolean> {
     const settings = await this.readSettings();
-    return settings.agentSkillEnabled === true;
+    return settings.agentSkillEnabled !== false;
   }
 
   // Whether pending agent-inbox mail is snapshotted to disk (synced