feat(settings): the codeman agent skill is on by default

agentSkillEnabled now reads an absent key as ON, the way
workspaceHooksEnabled does: only an explicit false turns it off. A new
session therefore finds the codeman skill in its folder without a
setting first, and with it the verbs that hand work to other CLIs and to
the local model on this Mac. Settings shows the switch on for the same
absent key.

The injection itself is unchanged: add-only, marker-owned, never through
a symlink, never for remote sessions or a plain shell. Turning the
setting off still removes nothing already written.

The quick-start test now pins the new default (injected on an absent
key, nothing after an explicit false), and the docs that said "default
off" say when that changed.

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

src/config/cli-registry/types.ts

@@ -633,7 +633,7 @@ export interface CliCapabilities {
   /**
    * Codeman may write its agent skill (`skills/codeman`) into this CLI's workspace and
    * seed its per-session preamble (behind the synced `agentSkillEnabled` setting,
-   * add-only, marker-owned). Where it lands comes from `agentSkillDir` below.
+   * default ON, add-only, marker-owned). Where it lands comes from `agentSkillDir` below.
    */
   agentSkillInjection: boolean;
   /**

src/hooks-config.ts

@@ -1601,7 +1601,7 @@ 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: an absent key is ON).
  *
  * 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, an absent key is ON); 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/settings-ui.js

@@ -711,7 +711,8 @@ 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, like the server's reader: only an explicit false turns the skill off.
+    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/server.ts

@@ -2464,11 +2464,12 @@ 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 new session's workspace (synced
+  // `agentSkillEnabled` setting, default ON; docs/agent-control-plan.md §2). An absent key
+  // is ON, like `workspaceHooksEnabled`: only an explicit `false` turns it off.
   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