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/215_30-y-o-Chinese-Man.txt

@@ -26,6 +26,9 @@ DATABASE RECORD
   notes               Chinese murdered during p2p trade in a hotel 
   has_processed_date  1
   created_at          2025-11-13 05:44:45
+  (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  [generated at bulk import, NOT verified against sources]
   **Victim:** 30 y/o Chinese Man
@@ -86,19 +89,19 @@ The police believe that the 30-year-old Chinese woman who surrendered may be the
 All of the suspects entered Jeju on tourist visas and are not illegally residing in the country.
 
 ------------------------------------------------------------------------------------------------
-FETCHED ARTICLE 1  [RAW EXTRACT — NOT YET TRIMMED]
-  !! This is the whole page as extracted. It still contains site furniture,
-  !! and may contain teaser headlines for UNRELATED cases. Trim on read-through.
-  !! Do not quote from it without checking the passage belongs to this case.
+FETCHED ARTICLE 1  [AUTO-TRIMMED — UNREVIEWED]
+  !! Furniture was cut by a script keyed on this case's record, not by a person.
+  !! It may still carry passages about OTHER cases from a round-up article.
+  !! The full page extract is kept in staging/ if a cut needs revisiting.
   Source     yna.co.kr
   URL        https://www.yna.co.kr/view/AKR20250225097600056
   Field      url
   Retrieved  2026-09-05T12:48:29+00:00 via raw HTTP retrieval, deterministic extraction (HTTP 200)
   Language   unknown
-  Kept       paragraphs ALL 18 paragraphs, untrimmed
-  Length     1,072 chars
-  Integrity  sha256 5be388e52d60f2ae54bfce1dd9f4b33258878ce04ab03de9b61ac89d61982ad6
-  Trimmed    NOT TRIMMED. Full page extract; trim on read-through.
+  Kept       paragraphs 0-15 of 18
+  Length     989 chars
+  Integrity  sha256 0c961ef268ebfe338c7d6850b7e76e67c445d9e31ea4f7e4c379f831e8644097
+  Trimmed    AUTO-TRIMMED, unreviewed: kept paragraphs 0-15; dropped 0 leading and 2 trailing paragraphs. Case-term hits on page: 2 (WEAK anchor, confirm the page is about this case).
   Caveat     retrieved from a live page on the date above. Unlike text copied
              from the spreadsheet, there is no second copy to hash it against.
 ------------------------------------------------------------------------------------------------
@@ -139,17 +142,6 @@ URL이 복사되었습니다.
 
 [영상] "터널 안에서 목소리 들려"…네팔 대홍수 9일만에 '기적의 생존'
 
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-
 ================================================================================================
 generated from attacks-export-Gart-website.json + reported_K&R  |  case 215
 ================================================================================================