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/292/01_news-bitcoin-com.txt

@@ -0,0 +1,65 @@
+Court to Try 2 Russians for Stealing 86 Bitcoins From Crypto Miner
+
+This article was published more than a year ago. Some information may no longer be current.
+
+Two residents of the Russian city of Tomsk will be tried for “large-scale robbery” involving the theft of cryptocurrency worth millions of rubles from a local miner. The digital coins were stolen from the owner at gunpoint, authorities said, adding that both criminals are now in custody.
+
+Thieves Face Trial in Russia for Armed Robbery of Cryptocurrency Miner
+
+The Kirovsky Court of Tomsk will soon try two men for their attack on another resident of the Siberian city who made a living by mining cryptocurrencies. They were able to extort from him coins worth more than 360 million rubles at the time (over $4.8 million), the Russian crypto news outlet Bits.media reported.
+
+The crime took place in October 2021. The perpetrators attacked the cryptocurrency miner when he was leaving his home. One of them threatened him with an object resembling a gun and brought him back inside his apartment.
+
+Then, his accomplice came in and the two forced the victim to log into his account on a crypto exchange and transfer them 86 BTC from a wallet that contained 90 BTC. It’s unclear why they decided not to withdraw the full balance.
+
+Russian law enforcement managed to track and detain one of the suspects in St. Petersburg. He has since pleaded guilty and returned the fiat equivalent of a portion of the stolen digital cash — 35 million rubles (close to $479,000 at current exchange rates). The second man was arrested later.
+
+The regional prosecutor’s office has charged the attackers with “robbery committed by a group of persons on an especially large scale” under the Criminal Code of the Russian Federation. They face up to 15 years in prison and a fine of up to 1 million rubles.
+
+Attacks against people owning and earning cryptocurrency have been on the rise in Russia. In July, 2021, armed robbers plundered a large mining farm near Moscow, stealing dozens of video cards used to mint digital currencies. Also last year, $1 million in tether was taken away from a crypto trader in the Russian capital.
+
+Do you think crypto-related crimes like in these cases will continue to spread with the popularity of cryptocurrencies? Share your thoughts on the subject in the comments section below.
+
+AttackBTCCrimeCryptocrypto miningCryptocurrenciesCryptocurrencyExchangeminerminingRussiarussianTrialWallet
+
+Bitfinex Flags Bullish Bitcoin Price Signal on Weekly Super Trend Chart
+
+The New RWA Meme Coin Meta Has TradFi CEOs Furious
+
+Robinhood Tops Binance bStocks With 862,800 Holders in 2 Months
+
+AMC CEO Demands Robinhood Halt Token Trading as Feud Erupts
+
+Kalshi's SCOTUS Pregame: Wait for the CFTC to Rewrite the Rules
+
+Bitcoin Price Rally Collapse Wipes Out $295M in Long Positions
+
+Bitcoin Price Plunges From $82K as $78,000 Becomes the Line
+
+XRP Branding Hits Florida Field in Reported $5M Annual Ripple Deal
+
+Strategy: Bitcoin Would Have to Fall 83% for STRC to Hit 1x BTC Rating
+
+Trezor Data Leak Spirals as 67,000 More US Buyers Get Exposed
+
+Are Memecoins Killing Crypto’s Next Bull Run?
+
+Bitcoin Miners Are Pivoting to AI. What Happens to Bitcoin Mining?
+
+Digital Sovereignty and the Global Race for Stablecoin Regulation
+
+Is the Crypto Bull Run in Trouble? Fed Risk, Bitcoin & Saylor’s 840K BTC
+
+Why Korea Blockchain Week 2026 Is Betting Big on Institutions
+
+US Bitcoin Mining Grip Slips From Q1 to Q3 as Rival Nations Gain
+
+Bitcoin Miners Pocket $1B in August, but Halving Pain Still Lingers
+
+Swedish Tax Scrutiny Shadows Crypto Miners’ Pivot to AI
+
+Bitcoin Mining Consumes 30% of Paraguay Energy, Analysts Reveal
+
+Bitdeer Cranks up Bitcoin Mining Power While Rivals Stampede Into AI
+
+Zcash Hashrate Goes Vertical as $870 ZEC Price Wakes ASIC Giants

merge-output/staging/292/index.json

@@ -0,0 +1,16 @@
+[
+  {
+    "case": 292,
+    "n": 1,
+    "field": "url",
+    "url": "https://news.bitcoin.com/court-to-try-2-russians-for-stealing-86-bitcoins-from-crypto-miner/",
+    "host": "news.bitcoin.com",
+    "fetched_at": "2026-09-05T12:44:41+00:00",
+    "verdict": "FETCHED",
+    "method": "raw",
+    "http": 200,
+    "chars": 3819,
+    "sha256": "e23719737a9c022013fec52df1c80a61a6f6c28a968a0d2e918f53ee94710b39",
+    "final_url": null
+  }
+]