feat: improve tool usage guidance in SOUL.md and add cron.create/cron.delete tools

- SOUL.md: list all available tools (web.search, memory.*, cron.*, etc.)
  and add Tool Usage Rules section enforcing 'act, don't narrate'
- cron.ts: add getJob(), addJob(), removeJob() to CronScheduler for
  runtime (ephemeral) cron job management
- cron tools: add cron.create and cron.delete tools, enhance cron.list
  to show schedule/output/message details
- policy.ts: add cron tools to messaging and coding profiles, add
  group:cron to tool groups

Fixes issue where models would narrate tool intent ('let me search...')
then stop without actually calling tools.

src/automation/cron.ts

@@ -100,4 +100,54 @@ export class CronScheduler implements ChannelAdapter {
   getJobNames(): string[] {
     return Array.from(this.jobs.keys());
   }
+
+  /** Get a job's config by name. */
+  getJob(name: string): CronJobConfig | undefined {
+    return this.jobs.get(name);
+  }
+
+  /**
+   * Add a new cron job at runtime and start it immediately.
+   * The job is ephemeral — it persists only until the daemon restarts.
+   * Returns true if the job was created, false if a job with that name already exists.
+   */
+  addJob(config: CronJobConfig): boolean {
+    if (this.jobs.has(config.name)) {
+      return false;
+    }
+
+    this.jobs.set(config.name, config);
+
+    if (config.enabled && this._status === 'connected') {
+      const cronInstance = new Cron(config.schedule, {
+        timezone: config.timezone,
+        paused: false,
+      }, () => {
+        this.triggerJob(config.name);
+      });
+
+      this.cronInstances.set(config.name, cronInstance);
+    }
+
+    return true;
+  }
+
+  /**
+   * Remove a cron job by name. Stops the cron instance if running.
+   * Returns true if the job was found and removed, false otherwise.
+   */
+  removeJob(name: string): boolean {
+    if (!this.jobs.has(name)) {
+      return false;
+    }
+
+    const cronInstance = this.cronInstances.get(name);
+    if (cronInstance) {
+      cronInstance.stop();
+      this.cronInstances.delete(name);
+    }
+
+    this.jobs.delete(name);
+    return true;
+  }
 }