feat(sources): Wayback pass, automatic trimming, detention rule, ten cases re-sourced

Second and third rounds on the dossier pipeline, reviewed locally before commit.

Retrieval
- wayback_pass.py: retries every BLOCKED/DEAD/THIN/ERROR linked source through
  the Wayback Machine; blocks carry the snapshot date, archive URL and the live
  verdict. 143 slots retried: 93 fetched, 37 no snapshot, 12 script shells, 1 PDF.
- fetch_sources.py: fetch_wayback() helper.
- add_extra_sources.py: files staged extra_* finds (web search, not on the DB
  record) into the store with a provenance note.
- Cases re-sourced by web search: 248 (Oslo: Document.no, Avisa Oslo, NRK; the
  linked Le Parisien piece is case 242 and is marked OFF-CASE), 258 Kharkiv,
  260 Singapore, 358 Bangkok, 365 Las Vegas, 388 Verneuil-sur-Seine, 390 Zoersel,
  430 Homestead. 341 of 364 cases now hold a fetched article; 11, 66 and 399
  have no public text source (podcast, police video, direct victim report).

Trimming
- auto_trim.py: case-anchored furniture cut for UNTRIMMED blocks. Finds the body
  run that mentions the case, merges across subheadings and short furniture
  gaps, drops teasers, share bars, date/URL/caption lines and subscription
  pitches; refuses pages with no record term or almost no body. 302 blocks
  trimmed; 16 left on auto-trim-review.md (7 OFF-CASE suspects). Every cut is
  labelled AUTO-TRIMMED, UNREVIEWED in the dossier; the full extract stays in
  staging/. Decisions with anchors in trim-decisions-auto.json.
- build_cases.py / verify_all.py: banners for auto-trimmed and archived blocks,
  staged-file check extended to Wayback blocks, flag legend under the record.

Detention rule
- README "Definitions": the DB field `kidnappings` is the DETENTION violence
  type (victim, guard, staff or relative held to force submission or execute
  the theft), distinct from the Kidnapping scenario (taken away and held).
- detention-flag-review.md / detention-flag-corrections.json: 40 records
  reviewed with evidence; 30 set-to-1 proposals accepted by the owner on
  2026-09-06 (listed in corrections-approved.md), 10 still open.
- apply_detention_wording.py: "Violence Used" in the 70 reviewed summaries now
  names detention explicitly (62 of 70 labelled), supported by the summary's
  own text; idempotent; supersedes the batch scripts' wording.

Worklist and docs
- sofia-worklist.md: 248 decisions, detention rule item replacing the old
  "no abduction" item, fresh-search section for the textless cases.
- README-START-HERE.md: progress notes, run commands, next steps.
- Bug fixed in passing: Wayback blocks stored in-memory text with carriage
  returns; now stored as read back from disk.

verify_all.py PASSES (2321 checks).

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01GZZENdTLzNGsbNy4DyF1yt

merge-output/staging/223/01_abs-cbn-com-wayback.txt

@@ -0,0 +1,7 @@
+Three suspects in Anson Que kidnap-slay now under custody: PNP | ABS-CBN News
+
+Three suspects in Anson Que kidnap-slay now under custody: PNP
+
+ABS-CBN is the leading media and entertainment company in the Philippines, offering quality content across TV, radio, digital, and film. Committed to public service and promoting Filipino values, ABS-CBN continues to inspire and connect audiences worldwide.
+
+© 2025 ABS-CBN Corporation. All Rights Reserved.

merge-output/staging/223/index.json

@@ -5,11 +5,14 @@
     "field": "url",
     "url": "https://www.abs-cbn.com/news/nation/2025/4/19/3-suspects-in-anson-que-kidnap-slay-now-under-custody-pnp-2012",
     "host": "abs-cbn.com",
-    "fetched_at": "2026-09-05T12:47:35+00:00",
-    "verdict": "BLOCKED",
-    "method": "raw",
-    "http": 403,
-    "note": "raw request refused; try the WebFetch path, which is a model transcription and must be labelled as such"
+    "fetched_at": "2026-09-05T13:27:46+00:00",
+    "verdict": "FETCHED",
+    "method": "wayback",
+    "snapshot": "20250724184611",
+    "archive_url": "http://web.archive.org/web/20250724184611/https://www.abs-cbn.com/news/nation/2025/4/19/3-suspects-in-anson-que-kidnap-slay-now-under-custody-pnp-2012",
+    "chars": 450,
+    "sha256": "49533532507317d5e57ba6d8e7d704f1e012beebcc4672678c115638b894dbf8",
+    "live_verdict": "BLOCKED"
   },
   {
     "case": 223,