feat(sources): fetch linked URLs for the 252 spreadsheet-only cases

Until now only cases 357+ (plus a few older ones) had their linked URLs
fetched; the other 252 dossiers held just the text pasted into the
spreadsheet, often only the lede. This pass fetches every linked URL for
those cases so the full text is on file before link rot takes it.

- stage_all.py: new --include-sheet-cases flag that lifts the skip on
  cases holding spreadsheet articles. Resumable as before.
- staging/: raw extracts and index.json for the 252 cases.
- sourced-articles.json, case-files-manifest.json: 188 new UNTRIMMED
  blocks. 179 cases gained at least one fetched article; 73 got none
  (49 BLOCKED, 18 THIN, 9 DEAD, 4 video/social, 3 ERROR).
- sources/*.txt: rebuilt with build_cases.py --all. Sheet pastes are
  kept; fetched blocks sit beside them under the NOT YET TRIMMED banner.
  Files previously committed with CRLF are now LF.
- wayback-availability.json: Wayback snapshots exist for 73 of the 98
  failed URL slots; input for an archive-fetch pass.
- README-START-HERE.md: progress note and next step.

verify_all.py PASSES (1836 checks).

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

merge-output/staging/092/01_cryptonews-com-au.txt

@@ -0,0 +1,37 @@
+Tinder Date Goes Bad in Attempted Crypto Grab - Crypto News Australia
+
+Home BitcoinTinder Date Goes Bad in Attempted Crypto Grab
+
+Tinder Date Goes Bad in Attempted Crypto Grab
+
+By Ben Carey
+ July 10, 2021
+ In Bitcoin, Crime, Crypto News, Scams
+
+A US man was drugged by a woman he met on Tinder who then attempted to steal his crypto.
+
+The man, who was a client of Casa, a company that offers heightened Bitcoin security, reported the attempted robbery to the Casa team, who performed a postmortem on the incident.
+
+Over the weekend, a CasaHODL client survived a ‘wrench attack’ – he was drugged and persuaded to give up access to phone, accounts, and passwords. With the client’s permission, we are sharing the story to help others learn to protect themselves.
+
+Tweet from Nick Neuman, CEO & co-founder of CasaHODL
+
+A blog post written by Casa’s Jameson Lopp details the strange and concerning attack. According to the victim, the woman claimed to be a crypto trader on her bio, which intrigued him and helped him establish common ground with her. After chatting online, they met up at a coffee shop. He thought she looked different from her photos, but not enough to raise any red flags.
+
+Later, they went back to his place for a drink and while he was in the bathroom it is suspected the woman laced his drink with scopolamine, also known as ‘Devil’s Breath’, or a benzodiazepine. Both drugs cause loss of inhibition and memory. He woke up the next day, noticing that his phone was missing and that attempts had been made to withdraw crypto from several of his accounts.
+
+Thankfully, the man was not harmed in any way and the perpetrator only managed to steal a small amount of his crypto, largely thanks to Casa’s multisig technology. The scammer managed to get a small amount of bitcoin out of one of his exchange accounts. He was able to block some of the other requested purchases and withdrawals by contacting those custodians to inform them of the compromise.
+
+The attacker managed to get a small amount of bitcoin out of one of our client’s exchange accounts. He was able to block some of the other requested purchases and withdrawals by contacting those custodians to inform them of the compromise. Since the attacker only had one of the client’s five keys to his Casa multisig, those funds could not be spent.
+
+Although this incident is bizarre, it is sadly not unprecedented. As the price of Bitcoin continues to rise, so too do the scams, particularly romance scams. According to Australian government website Scam Watch, there were 277 reports of romance scams in June alone, resulting in losses of A$5,857,472. Many of these incidents do not make the news though there have been some high-profile cases; Australian schoolteacher Melanie Kilgour was involved in a romance scam in 2020 that cost her an estimated $50,000 worth of bitcoin.
+
+Crypto News Australia has put together an excellent guide on how to avoid Bitcoin scams, including a section on romance scams, which we strongly recommend you check out. Additionally, at the end of his postmortem, Lopp provides a list of useful strategies to help protect yourself and minimise the risk of becoming a victim of a romance scam.
+
+Ben Carey is a Brisbane-based writer, with a wide range of experience, from copywriting to game design and film and tv scriptwriting. He's been following, investing, and trading crypto since 2017. He has three lambos (in Gran Turismo), and can often be seen around town wearing a Bitcoin or Ethereum themed Christmas sweater.
+
+Coldcard Hacker Starts Swapping Stolen Bitcoin for Ether
+
+Bitcoin Breaks $80K as Mass Short Liquidations Fuel Crypto Rally
+
+Bitcoin ETFs Stage Comeback While XRP Funds Rack Up 11-Day Inflow Streak

merge-output/staging/092/index.json

@@ -0,0 +1,16 @@
+[
+  {
+    "case": 92,
+    "n": 1,
+    "field": "url",
+    "url": "https://cryptonews.com.au/news/tinder-date-goes-bad-in-attempted-crypto-grab-91283/",
+    "host": "cryptonews.com.au",
+    "fetched_at": "2026-09-05T12:53:31+00:00",
+    "verdict": "FETCHED",
+    "method": "raw",
+    "http": 200,
+    "chars": 3720,
+    "sha256": "f35f1773450090b15ccf64294464d15b0efad785848974d6d3e3f44df76a19b3",
+    "final_url": null
+  }
+]