feat(photo-editor): NL editor planner, image ops, email/gallery server

Server-side photo editor: natural-language editor agent route
(/api/editor/agent), photo_editor tool family + style guide, image-op
provider proxy with progress, email server hardening, gallery/hwfit
routes, and graceful shutdown.

Source: vendor/photocraft (ad1cff44) editor-server files, merged onto
upstream/dev (a8c147b2). Conflict resolution documented in
pr_work/B_conflicts.md.

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

tests/test_editor_writing_action_routing.py

@@ -11,6 +11,7 @@ from src.clean_agent_preview import (
 from src.turn_contract import (
     editor_request_instructions, requested_capabilities, selected_tools_for_request,
     preserve_bound_editor_selected_tools, resolve_turn_contract,
+    targets_bound_editor_request,
 )
 from src.tool_schemas import FUNCTION_TOOL_SCHEMAS
 from src.tool_policy import ToolPolicy
@@ -72,6 +73,16 @@ def test_direct_edits_share_the_capability_router(prompt):
     assert not active_editor_suggestion_request(doc, prompt)
 
 
+@pytest.mark.parametrize('prompt', [
+    'ga mer ut pa att vi tanker pa framtid for bjorn och att vi faktist trivs sa bra har',
+    'Go more into how we are thinking about the future.',
+])
+def test_implicit_revision_followups_route_to_active_document_only(prompt):
+    assert requested_capabilities(prompt, active_document=True) == {'documents'}
+    assert requested_capabilities(prompt, active_document=False) == frozenset()
+    assert targets_bound_editor_request(prompt)
+
+
 def test_source_review_still_requires_tool_completion_after_research():
     schemas = [s for s in FUNCTION_TOOL_SCHEMAS if s['function']['name'] in {'web_search', 'suggest_document'}]
     assert required_active_editor_tool_choice(active_editor_target=True, suggestion_target=True,