Faza 1 complete: bilingual+enrichment plumbing, UI/filters, frozen DB

Extraction finished (575/588 chunks; 6 content-filter-blocked, 7 await
re-extraction). DB rebuilt and frozen at 9418 activities — content_keys
are now stable for the enrichment overlay.

Part A (plumbing + UI):
- database.py: name_ro/description_ro/rules_ro/variations_ro, indoor_outdoor,
  space_needed, estimated_fields, source_id/source_ids/chunk_key columns;
  FTS5 indexes the 4 *_ro columns across CREATE + all 3 triggers; new equality
  filters + category counts for both axes.
- activity.py: new fields + bilingual display helpers (get_display_*,
  is_estimated, axis displays).
- config_taxonomy.py: INDOOR_OUTDOOR/SPACE_NEEDED enums + normalizers
  (None on unrecognised, no fabrication).
- search.py / routes.py / config.py / templates / css: new dropdowns,
  RO-primary rendering with "(estimat)" markers and collapsible original
  text, and a /source/<id> download route shipped DARK behind
  SOURCE_DOWNLOAD_ENABLED (copyright opt-in).
- build_database.py: source_id/chunk_key in dict_to_activity; merge_cluster
  unions source_ids without touching enrichment fields.

Part B (enrichment pipeline, built not yet run):
- build_database.py: load_enrichment + apply_enrichment (post-dedup, keyed on
  content_key) + --enrichment CLI + stated-vs-estimated QA.
- run_enrichment.py (resumable, --source/--limit pilot scoping, --collect),
  ENRICHMENT_PROMPT.md.

Repair: scripts/repair_extractions.py fixes the subagents' systematic
unescaped-ASCII-quote bug with a faithful char-scanner (escapes, never
truncates) + schema validation + a strictly-more-text guard. json_repair was
tried first, truncated silently, and is NOT used. build_database has no repair
dependency.

Tests: tests/test_enrichment.py added; 99 pass.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

app/config.py

@@ -22,6 +22,18 @@ class Config:
     # Search settings
     SEARCH_RESULTS_LIMIT = int(os.environ.get('SEARCH_RESULTS_LIMIT', '100'))
     FTS_ENABLED = True
+
+    # Source-file download (plan A6). Shipped DARK by default: serving the
+    # original PDFs/books carries a copyright exposure the user must opt into.
+    # The /source/<id> route 404s entirely while this is false; the UI hides
+    # the download link. Enable with SOURCE_DOWNLOAD_ENABLED=true.
+    SOURCE_DOWNLOAD_ENABLED = (
+        os.environ.get('SOURCE_DOWNLOAD_ENABLED', 'false').lower() == 'true'
+    )
+    # Root of the original corpus. source_file values are relative to this.
+    CORPUS_DIR = os.environ.get('CORPUS_DIR') or str(
+        Path(__file__).parent.parent / 'data' / 'carti-camp-jocuri'
+    )
     
     @staticmethod
     def ensure_directories():