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/177/01_cointab-com.txt

@@ -0,0 +1,51 @@
+UK-based Crypto Investor Ramesh Nair Loses Over $4M to Armed Robbers - CoinTab News
+
+UK-based Crypto Investor Ramesh Nair Loses Over $4M to Armed Robbers
+
+Popular UK-based crypto investor Ramesh Nair shares experience of how he lost over $4 million to armed robbers at home.
+
+London-based cryptocurrency investor Ramesh Nair has publicly confirmed being robbed at this home by three men armed with machetes. At the risk of being stabbed, the culprits forced Ramesh (popularly known as Ram) to transfer his cryptocurrency assets stored in his Ledger wallet to them.
+
+Going through the record of transactions shared by the entrepreneur, the hackers made away with over $4.1 million worth of cryptocurrencies, primarily including Ether (ETH), Uniswap (UNI), and Chainlink (LINK), among others. At the time of writing, a majority of these assets are still being held at the attacker’s address.
+
+This just happened- 3 guys physically robbed me at my home. They were armed with machetes.
+
+They knew I had crypto and knew where I lived. They forced me to open my ledger and then transferred all of my crypto out. Luckily I didn’t get stabbed.
+
+In a follow-up update, Ram, who described the incident as “one of the worst experiences of his life,” revealed that he is currently prioritizing safety over asset recovery. Meanwhile, Ram also called the attention of popular exchanges such as Binance, Coinbase, and Kraken to halt the attackers if funds are moved into their platforms.
+
+Minimizing the Risks of Physical Crypto Robbery
+
+Ramesh Nair’s story has received broad sympathy from the cryptocurrency community on X, with some investors sharing that they had a similar horrible experience. While it is understandably difficult for cryptocurrency investors to disassociate their investment in the industry from their real-life, experienced investors typically recommend not disclosing too much about one’s crypto involvement in everyday conversations.
+
+At the same time, it is usually best not to disclose the amount of cryptocurrencies you own while discussing them on social media groups and forums. Another safety measure is to store assets on multiple devices and addresses, minimizing the risk of what could be lost in the event of such a physical robbery.
+
+We Have The Best Crypto Community on Telegram.
+
+Wilfred Michael is a highly experienced cryptocurrency journo. He has spent more than five years covering this exciting new technological space, and relishes the opportunity to play a role in driving what he considers to be the future of finance.
+
+MORE POSTS LIKE THIS...
+
+Mt. Gox’s Former CEO to Launch New “Transparent” Crypto Exchange
+
+Ego Death Capital Secures $100M to Fund Bitcoin-Focused Startups
+
+Trump Teases Idea of Using Bitcoin to Pay $35T US Govt Debt
+
+Algorand Hits New Milestone of 3000 Nodes
+
+Fold Holdings and Blackhawk Network Partner to Expand Bitcoin Gift Card Access
+
+U.S. SEC Acknowledges BlackRock’s Filing to Enable Staking in Spot Ethereum ETF
+
+$ZEC Hits 8-Year High After Grayscale Debuts Zcash ETF
+
+ENA Jumps 17% on Ethena Fee Switch Proposal Approval
+
+Here’s How This Trader Turns $5K Into $5.4M on $PONS
+
+Solana-based Sanctum to Burn 25.9% of Supply, Revamp Token’s Ticker
+
+MarsCoin (MARSCOIN) Rockets Over 90% as Binance Derivatives Listing Ignites Rally
+
+Finally! Strategy Buys $370M in Bitcoin After 10-Week Buying Freeze

merge-output/staging/177/index.json

@@ -0,0 +1,16 @@
+[
+  {
+    "case": 177,
+    "n": 1,
+    "field": "url",
+    "url": "https://cointab.com/crypto-investor-ramesh-nair-lose-4m-to-robbers/",
+    "host": "cointab.com",
+    "fetched_at": "2026-09-05T12:50:41+00:00",
+    "verdict": "FETCHED",
+    "method": "raw",
+    "http": 200,
+    "chars": 3357,
+    "sha256": "a4555d98e2c2a8d13920f5d348eebf64b0ee08a73ce59f1d3a60a822c3a4c329",
+    "final_url": null
+  }
+]