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feat(kernel): sk_v4_mint_zuse -- the real Zuse minted onto a second stick, read back before the marker names her (#92, 4.5) [skip ci]

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Asks for a stick, shows its size, writes nothing until YES; then gpt_write_one, the partition's first devblocks zeroed, a fresh Zuse minted, read back, and only then the marker's real key. Any failure before the marker: 'failed -- nothing changed'. The gate remembers the last stick it turned away as a spare, offered first by the next mint. Builds on three ISAs; not yet called.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01GE3SDvQn5EoxdGufk84zz2
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Claude
2026-11-08 18:14:54 +00:00
parent cfa60fd0ec
commit 8b83e0a72d
6 changed files with 206 additions and 4 deletions
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docs/v4.0.0/plans/2026-10-29-stick-5-proxy-zuse-and-real-zuse.md
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@@ -355,7 +355,7 @@ Tasks 1-3 accepted and merged (#159, master 594d2f93); #155 merged with them.
- [x] 4.2 run `mint_zuse` on amd64 before any kernel change: FAIL, "UNKNOWN WORD: 'MINT-ZUSE'" (logs/20261108-175928); the prompt check tightened to need the minted line first
- [x] 4.3 `gpt_write_one()` in `kernel/src/gpt.c` (one partition, protective MBR, both headers): builds clean on three ISAs; checked on the host (a throwaway harness, not in the tree) -- 600 MiB and 32 MiB blank images and the pair's used Zuse stick each give one identity partition, `gpt_read` reads it back, `sfdisk --verify` clean. Not yet called.
- [x] 4.4 `sk_v4_identity_offer_wait()` / `sk_v4_identity_recheck_offered()`: a stick offered, not attached, while a mint waits (`g_mint_waiting`, `g_offered` in `sk_v4_identity.c`; any stick not this system's and readable -- blank, foreign or a bad table; ends on a stick, a key, or the system stick leaving). Builds on three ISAs; not yet called.
- [ ] 4.5 `sk_v4_mint.c`: the flow -- plug-in line, size line, `YES`, GPT, zeroed, minted, read back, marker
- [x] 4.5 `sk_v4_mint.c`: the flow -- plug-in line, size line, `YES`, GPT, zeroed, minted, read back, marker. Builds on three ISAs; not yet called. The gate gained a **spare**: the last stick turned away as not this system's (or handed back by a refused mint) is offered first by the next mint (for `mint_zuse_refuse`: "a second `MINT-ZUSE` is offered again"); and accessors `sk_v4_identity_stick_in/offered_present/release_offered/marker/set_marker`.
- [ ] 4.6 `MINT-ZUSE` in `sk_v4_words[]` (request 2): word_count 317 -> 318
- [ ] 4.7 the real Zuse stick recognised and attached after the system stick; her session
- [ ] 4.8 `mint_zuse` passes on amd64; then the other tests: `mint_zuse_refuse`, `mint_pull_system`, `zuse_stick_first`, `mint_small`, the pair's stick offered