docs: record CI branch work — D1/D2 done, TT5 partial, handoff 70

requirements.md: D1 (all six cross-platform binaries) and D2 (no-runtime-
deps, per-platform) done; D3 noted (binaries shipped, package managers
pending); TT5 partial (gate + macOS test live; Windows build-only; Tier-4
unwired). CLAUDE.md: add the CI/release decision (-> docs/ci/adr) + update
the deferred list. Adds handoff 70 summarising the pipeline + follow-ups
(incl. the versioning gap).

CLAUDE.md

@@ -108,6 +108,23 @@ Current decisions at a glance (each backed by an ADR):
   SQL `select` / `with` / `insert` / `update` / `delete`
   (ADR-0039). `EXPLAIN QUERY PLAN` never executes, so
   explaining a destructive command is safe.
+- **Continuous integration & release** (built on the `ci` branch,
+  2026-06-15; decisions in `docs/ci/adr/` — **ADR-ci-001/002/003**,
+  a namespace kept separate from the main ADR sequence to avoid
+  cross-branch number collisions, like the website's): a self-hosted
+  **Gitea Actions** pipeline built on a **nix flake** (pinned Rust
+  `1.95.0` — one source of toolchain for dev *and* CI) plus a
+  prebuilt CI image. **Gate** (`ci.yaml`): `clippy -D warnings` +
+  `cargo test` on every branch push / PR. **Release** on a `v*` tag
+  (`release.yaml`): the four non-macOS **D1** targets cross-built
+  with `cargo-zigbuild` (Linux musl static + standalone Windows
+  `.exe`); the two macOS targets via the **dispatched**
+  `release-macos.yaml` on a Tart Apple-Silicon runner (de-nix the
+  `libiconv` load path + ad-hoc re-sign). All published to a Gitea
+  release with `.sha256`s. **`fmt` is intentionally not gated yet**
+  (the tree isn't stock-`rustfmt`-clean). `workflow_dispatch` is
+  Gitea-default-branch-only, so `release-macos` is dispatchable once
+  this lands on `main`.
 
 ## Repository layout
 
@@ -344,8 +361,14 @@ not yet implemented:
   Ctrl-Enter submits.
 - **Tab completion** (I3), **syntax highlighting** (I4).
 - **ER diagram export** (V3).
-- **CI** (TT5): test infrastructure exists; CI workflow not
-  yet configured.
+- **Full TT5** (CI): the pipeline is live (see the CI decision
+  above / `docs/ci/adr/`), but "all tiers on all OSes" isn't
+  complete — **Windows is build-only** (cross-compiled, not
+  executed: no Windows runner) and **Tier 4** (PTY, TT4) isn't
+  wired in CI.
+- **D3 packaging**: prebuilt binaries + checksums ship to Gitea
+  releases, but the Homebrew / Scoop / winget / `cargo binstall`
+  manifests are not done.
 
 ## Handoff notes