# Task ID: 39

**Title:** Validation Checkpoint 1: Authentication & Tenant Management

**Status:** done

**Dependencies:** 1 ✓, 2 ✓, 3 ✓, 4 ✓, 5 ✓, 6 ✓, 7 ✓, 8 ✓, 9 ✓, 10 ✓, 11 ✓, 12 ✓, 13 ✓, 14 ✓

**Priority:** high

**Description:** Validate Phase 1 completion by testing all authentication, tenant management, and core infrastructure functionality. This checkpoint gates entry into Phase 2 (Read Operations).

**Details:**

**Validation Criteria:**
- [x] Can authenticate with certificate
- [x] Can authenticate with client secret (env var)
- [x] Can add/list/switch/remove tenant profiles
- [x] Token caching works across sessions
- [x] --tenant flag overrides active tenant

**Test Execution:**
1. Test certificate authentication with test tenant
2. Test client secret authentication (TEAMS_PHONE_CLIENT_SECRET env var)
3. Add new tenant profile, list tenants, switch between profiles, remove tenant
4. Verify token persists across CLI sessions (logout/login)
5. Test --tenant flag override on commands

**Success Criteria:** All validation items pass, no regressions in authentication or configuration management.

**Test Strategy:**

Manual testing with test tenant, automated integration tests verifying auth flows and tenant management.

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## Implementation Notes

### Session: 2026-01-29 - Agent: claude-opus-4-5-20251101

**Status:** All validations passed

#### Validation Results

| Test | Result | Notes |
|------|--------|-------|
| Certificate auth | PASS | PFX exported from Windows cert store, converted to PEM via OpenSSL |
| Client secret auth | PASS | Tested with 24-hour TTL secret via TEAMS_PHONE_CLIENT_SECRET env var |
| Tenant list | PASS | Displays configured tenants with current tenant marked |
| Tenant add | PASS | Creates new profile in config.toml with all required fields |
| Tenant switch | PASS | Updates default_tenant, auto-login validates credentials (--no-login to skip) |
| Tenant remove | PASS | Removes profile with confirmation prompt (--force to skip) |
| Token caching | PASS | Tokens cached at ~/.teams-phone/tokens/{tenant}.json, persist across sessions |
| --tenant override | PASS | Global flag correctly overrides default tenant without modifying config |

#### Issues Found and Fixed

1. **Unicode encoding error on Windows (cp1252)**
   - Rich console couldn't render checkmark character (✓) on Windows legacy terminal
   - Fixed in `output_formatter.py:106`: Changed `✓` to `OK:` for ASCII compatibility

2. **Missing CLI entry point**
   - `pyproject.toml` was missing `[project.scripts]` section
   - Added: `teams-phone = "teams_phone.cli.main:app"`
   - Now `uv run teams-phone` works as expected

3. **Config file formatting**
   - User's config had inconsistent indentation
   - ConfigManager normalizes on save with all default values populated

#### Scope Adjustment

Moved these validation items to Checkpoint 4 (Task 42) since Task 28 (api-check command) depends on Task 41:
- `api-check` validates all endpoint schemas
- API responses fail fast on unexpected schema changes (strict Pydantic)

#### Test Environment

- Tenant: HVK Sandbox (hvksandbox)
- Auth methods tested: certificate (primary), client-secret (temporary 24h TTL)
- Platform: Windows 11, Python 3.13, uv package manager

#### Files Modified
```
src/teams_phone/infrastructure/output_formatter.py (fixed Unicode issue)
pyproject.toml (added CLI entry point)
.taskmaster/tasks/tasks.json (moved api-check items to Checkpoint 4)
```

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