docs(thirdweb): collapse seven thirdweb pages into one tool page at parity (#2255) - #2291

…fixes, gate coverage

Review fixes on #2253.

Redirects. Mintlify takes one hop, and array order decides which entry matches,
so a specific source below a wildcard is dead code. Six legacy URLs reached a
page this PR deletes and would have 404d; three more were a regression from
#2291, where /build/:slug* shadowed the thirdweb entries. Explicit entries for
all of them now sit above the wildcards, along with the /developer/setup/* and
/developer/migrate/from-ethereum paths that the segment-dropping wildcards never
resolved. A resolver over the full array now reports zero chains, zero dead
destinations and zero shadowed sources.

Three redirect targets did not answer the deleted page's question: coinbase-wallet
now goes to the MetaMask setup page that carries the same wallet_addEthereumChain
content, setup/wallet to add-celo-testnet-to-metamask, and setup/replit to Remix,
the surviving browser-only path. With socialconnect in navigation, the six
identity-concept sources that pointed at the ContractKit ODIS API page now reach
it, and the celo-for-eth-devs sources reach from-ethereum.

Content on the pages this PR publishes:

- from-ethereum said Celo "uses EigenLayer as the data settlement layer" (it is
  EigenDA, for data availability), claimed 1-second finality, had a reversed
  markdown link to a path that does not resolve, recommended the archived
  celo-org/rosetta, and linked precompiles at celo-blockchain v1.3.2. The
  precompile list now points at core/vm/celo_contracts.go in op-geth.
- migrating-to-viem shipped code that cannot run: an unterminated string literal
  in two blocks, publicClient.getAddresses(), walletClient.sendSignedTransaction,
  and sendTransaction after simulateContract. The CeloTokens helper returned
  pairs, so indexing it by name never worked; it now returns a lookup. The
  Alfajores USDm address was passed as feeCurrency on a mainnet client —
  eth_call symbol() at that address on forno.celo.org returns no code. Replaced
  with the mainnet USDm address, verified to return "USDm".
- hardhat's prerequisites dead-ended: the config needs a mnemonic on Celo's
  derivation path and no page explained how to get one. Now links celocli
  account:new and notes MetaMask cannot produce one.
- contract-verification lost a duplicated lede, gained Foundry in its method
  list, and no longer promises a foundry.toml block that does not exist.
- socialconnect lost its emoji headings, its question heading and "Further
  Reading", and gained a Related section — it had no internal links at all.
- wit-oracle's Solidity blocks were tagged javascript, and the web3.py snippet
  parsed in neither language.
- build-on-celo/index no longer points at an "Edit this page" control; docs.json
  has no feedback key, so it does not render.

The orphan gate had two blind spots that became load-bearing once it fails CI:
pages referenced by href or root were invisible to it, and .md was not matched
at all. Both fixed, with tests confirming an orphaned .md is caught and an
href-only reference is not a false positive.

Deletes img/doc-images/deploy-replit and img/doc-images/testnet-wallet — 18
files, 7.9 MB, unreferenced once replit.mdx and wallet.mdx are gone.

Verified: scripts/check-orphans.sh reports no orphan pages; mintlify
broken-links reports no broken links.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>