feat: Phase 2 triage with keyboard shortcuts J/S/X

Implement /triage GET/POST routes in triage.py blueprint; render
phase2.html with day-grouped photo grid, Alpine.js keyboard tagging
(J=journal, S=story, X/Space=skip), and done-button gated on all-tagged.
Remove stub from albums.py; register triage.bp in __init__.py.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

services/travel-memories/tests/test_phase2.py

@@ -0,0 +1,40 @@
+import json
+
+
+def test_photos_render_in_day_groups(base_url, page, seed_state):
+    album_id = seed_state("phase2_state")
+    page.goto(f"{base_url}/triage?album_id={album_id}")
+    assert page.locator(".day-group").count() >= 1
+    assert page.locator(".photo-card").count() == 3
+
+
+def test_keyboard_j_tags_journal(base_url, page, seed_state):
+    album_id = seed_state("phase2_state")
+    page.goto(f"{base_url}/triage?album_id={album_id}")
+    page.locator(".photo-card").first.click()
+    page.keyboard.press("j")
+    page.wait_for_timeout(300)
+    card = page.locator(".photo-card").first
+    assert "border-success" in card.get_attribute("class")
+
+
+def test_keyboard_s_tags_story(base_url, page, seed_state):
+    album_id = seed_state("phase2_state")
+    page.goto(f"{base_url}/triage?album_id={album_id}")
+    page.locator(".photo-card").first.click()
+    page.keyboard.press("s")
+    page.wait_for_timeout(300)
+    assert "border-info" in page.locator(".photo-card").first.get_attribute("class")
+
+
+def test_done_button_disabled_until_all_tagged(base_url, page, seed_state):
+    album_id = seed_state("phase2_state")
+    page.goto(f"{base_url}/triage?album_id={album_id}")
+    assert page.locator("#done-btn").is_disabled()
+
+
+def test_done_advances_to_curate(base_url, page, seed_state):
+    album_id = seed_state("phase3_state")  # all tagged
+    page.goto(f"{base_url}/triage?album_id={album_id}")
+    page.locator("#done-btn").click()
+    page.wait_for_url("**/curate**")