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/sources/370_Family.txt

@@ -26,6 +26,9 @@ DATABASE RECORD
   notes               4 men entered the home, tortured and assaulted the family, until they gained access to the accounts of the parents, which they emptied. The daughter escaped to alert neighbors
   has_processed_date  0
   created_at          2025-12-04 19:43:51
+  (flag legend: 'kidnappings' is the DETENTION flag — 1 when the victim was held against
+   their will at any point, tied, locked in, held at gunpoint or taken away; it is NOT the
+   same as the 'Kidnapping' scenario, which means taken away and held. See README, Definitions.)
 
 AI SUMMARY  [revised on review, verified against the sources in this file. Live DB still holds the shorter bulk-import summary — apply this to it.]
   **Victims:** A family in Port Moody, British Columbia — a father who was a Bitcoin holder and had discussed his holdings within the local Chinese community, his wife, and their daughter.
@@ -34,7 +37,7 @@ AI SUMMARY  [revised on review, verified against the sources in this file. Live
   
   **Attack Method:** On 27-28 April 2024 the fake couriers got the father to open the door, forced their way in and locked it, then bound all three family members with zip ties over about 13 hours while demanding access to his cryptocurrency.
   
-  **Violence Used:** Both parents were subjected to waterboarding and threatened with mutilation; the daughter was forced to undress, be filmed and repeat sexual phrases, and was sexually assaulted by one of the attackers.
+  **Violence Used:** Detention — all three family members were bound with zip ties for about 13 hours; both parents were subjected to waterboarding and threatened with mutilation; the daughter was forced to undress, be filmed and repeat sexual phrases, and was sexually assaulted by one of the attackers.
   
   **Crypto Demanded/Stolen:** The gang first demanded 200 BTC, then lowered it to 100 BTC, and ultimately transferred about US$1.6 million in cryptocurrency before fleeing.