FABRIC-3.md: Task 1 closed -- master fast-forwarded to v2.0.1, verified

master (d2a0305) was a strict ancestor of v2.0.1 (72c14cb) -- pure
fast-forward, no real merge needed. Fast-forwarded local master,
pushed to origin (58c59e8..72c14cb). Verified on a genuinely clean
master tree rather than inferring from the fast-forward: hosted build
clean, 3-arch kernel acceptance (amd64/aarch64/riscv64, each in the
foreground) all reached ok>/zuse)ok> and shut down cleanly, identical
to v2.0.1's own last acceptance pass. master and v2.0.1 are now
identical on both local and origin.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_019YcT3H2PQeyujrzjqS3Var

FABRIC-3.md

@@ -56,4 +56,23 @@ starting new work avoids ever having two divergent lines to reconcile later.
 4. Return to `v2.0.1` as the working branch afterward (`.claude/CLAUDE.md`'s own rule: always
    return to the correct working branch after any out-of-branch work), unless told otherwise.
 
-**Not yet done — this section will be updated with results once execution completes.**
+**DONE 2026-09-04, exactly as planned:**
+1. Committed the write-up above on `v2.0.1` first (`72c14cb`), pushed. This became `v2.0.1`'s
+   new tip.
+2. `git checkout master && git merge --ff-only v2.0.1` — **Fast-forward**, `d2a0305..72c14cb`,
+   confirming the investigated ancestor relationship held exactly as expected; no conflict, no
+   merge commit.
+3. `git push origin master` — `origin/master` moved `58c59e8..72c14cb`.
+4. **Verified on a genuinely clean `master` tree**, not inferred from the fast-forward:
+   - Hosted build (`make clean && make`): clean compile, zero warnings, same as `v2.0.1`.
+   - Full 3-arch kernel acceptance (`clean qemu`, amd64/aarch64/riscv64, each in the foreground):
+     all three reached `(zuse) ok>`/`ok>` and shut down cleanly, zero build errors, zero
+     unexpected warnings — identical outcome to `v2.0.1`'s own last acceptance pass, confirmed
+     directly rather than assumed. Logs: `logs/20260904-113208/amd64/`,
+     `logs/20260904-113320/aarch64/`, `logs/20260904-113552/riscv64/`.
+5. `master` and `v2.0.1` are now identical (`72c14cb` on both, `origin` and local). Returned to
+   `v2.0.1` as the working branch per plan step 4.
+
+**Task 1 closed.** `master` genuinely is the production line again, current through today's
+FABRIC-series rename and the full `FABRIC-2.md` §I closure. Bare-metal-boot work (this
+document's actual topic) starts from here.