Round 6. Documentation only; no code, no protocol change.
1. **The four-writer table mapped the wrong buffers to `ensure_slot`.**
Verified at the call sites: `ensure_slot` has exactly two callers,
`*compilation*` (`compile.lua:1090`) and `*shell-command*` (`:1125`).
`*search-results*` is an **independent panel** in
`builtin/commands/default.lua` with its own intercept (`:869`),
round-trip mark and writes; `compile.lua` declares its name only to
answer a predicate (`:216`), which is what made it look like a third
slot. Round 5 fixed an undercount and introduced a misattribution in
the same paragraph — the count was right, the mechanism was not.
The table is now keyed by **writer**, not by buffer, so the mapping
cannot silently drift again: four mechanisms, five buffers. It carries
an explicit "do not read `ensure_slot` as covering the search panel"
note, because that is the specific wrong inference.
Corrected identically in `COHERENCE.md` §14 and the framing's
deferred-lane text, which both carried the error.
The scope claim is narrowed with it. "Every generated buffer outside
copy mode" was too wide: `*workers*`, `*help*` and `*buffer-list*` are
generated but do not use this idiom, and the REPL package's intercept
(`packages/repl/init.lua:187`) is an op-filtering editing policy
rather than a read-only panel. The claim is now "every remaining
intercept-protected writer", and the two excluded groups are named so
the next reader does not have to re-derive the boundary.
2. **The recovery floor contradicted itself.** The canonical-base line
said the check accepts `a27f646` or anything newer while the check
below required `74301d1`. The floor genuinely advanced; the prose now
says so outright — a tree at `a27f646` no longer passes — and states
why the floor must move with the base rather than trailing it.
3. **Two anchors survived the integration.** Lean 4 Stage 4a said it was
part of "the `fe8b8ba` anchor above" when the anchor had become
`74301d1`; it now refers to the anchor rather than restating a commit,
which is what let it go stale. And #168's closed entry called its own
`fe8b8ba` figure "the live figure" — it is a reading taken at
`1b6a084`, kept as history, and now says so and points at the
coverage lane as the single authority with an explicit "do not quote
this one forward".
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_016gGQC6eqHJVbZJ5Hg7aLer
Levi Neuwirth
d2ab3761c7