merge: AgentProject membership — the junction is now load-bearing

Merges feat/agent-project-membership (task 166/152). An agent can finally join
many projects: membership routes, per-membership role and optional brain
override, chat resolving context from the membership, and CLI attach-agent /
detach-agent / get memberships. The legacy Agent.projectId fallback is kept for
this release as the schema comment promises.

Conflict resolved in main.ts: that branch added its RBAC case to
mapUrlToPermission inline, while this branch had extracted the function to
middleware/url-permission.ts so it could be tested. Kept the extraction and
ported the case into it — joining a team is `edit:agents:<name>`, not
`create:agents`, which is the authority to mint a whole agent.

Also fixes something the extraction makes possible. security.test.ts contained a
hand-copied reproduction of mapUrlToPermission, because main.ts self-invokes
main() and nothing in it was importable. A security test asserting against a
copy stops testing the system the moment the real one changes, and this copy had
already drifted. It now imports the real function; all 18 assertions still pass,
against the code that actually runs.

Local: build clean, workspace 2550 passed, lint unchanged at 794 errors.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01N4wNHWf7xSwnZCWpJcyv9p

.taskmaster/tasks/task_060.md

@@ -0,0 +1,54 @@
+# Task ID: 60
+
+**Title:** Update CLI get prompt command for -A flag and link columns
+
+**Status:** done
+
+**Dependencies:** 57 ✓, 59 ✓
+
+**Priority:** medium
+
+**Description:** Extend the mcpctl get prompt command with -A (all projects) flag and add link target and status columns to output.
+
+**Details:**
+
+1. Update `/src/cli/src/commands/get.ts` for prompt:
+   ```typescript
+   .command('prompt [name]')
+   .option('-A, --all-projects', 'Show prompts from all projects')
+   .option('-p, --project <name>', 'Filter by project')
+   .action(async (name, options) => {
+     let url = '/api/v1/prompts';
+     if (options.allProjects) {
+       url += '?all=true';
+     } else if (options.project) {
+       url += `?project=${options.project}`;
+     }
+     
+     const prompts = await api.get(url);
+     
+     // Format table with new columns
+     formatPromptsTable(prompts, {
+       columns: ['PROJECT', 'NAME', 'PRIORITY', 'LINK', 'STATUS']
+     });
+   });
+   ```
+
+2. Update table formatter to handle link columns:
+   ```
+   PROJECT           NAME                 PRIORITY  LINK                                          STATUS
+   homeautomation    security-policies    8         -                                             -
+   homeautomation    architecture-adr     6         system-public/docmost-mcp:docmost://pages/a1  alive
+   ```
+
+3. Add shell completions for -A flag
+
+**Test Strategy:**
+
+- Unit test: -A flag shows all projects
+- Unit test: --project flag filters by project
+- Unit test: PRIORITY column displayed
+- Unit test: LINK column shows linkTarget or -
+- Unit test: STATUS column shows linkStatus or -
+- Unit test: Table formatted correctly
+- Integration test: End-to-end get with flags