# Session handoff — 2026-06-25 (80) A long session. It began as the next open-issue item — **#37, clause-concept hints** — but the act of cutting a branch for it surfaced that this now-public repo had **no written, trackable working method**. So the bulk of the session became establishing one (**ADR-0059**) and hardening it through real use, with two follow-up fixes the dogfooding turned up. Both arcs are fully merged; the tree is clean. ## §1. State **Branch `main` at `78272e2`.** Everything below is merged; **no open PRs**; worktrees are just the primary (`main`) + the long-lived `website`. All feature/fix worktrees were cleaned up with `wt-rm`. **Suite green at #37's merge:** **1831 lib + 8 e2e_pty + 503 it + 200 typing (2542 total), 0 failed, 1 ignored**; `fmt --check` + `clippy -D warnings` clean (via `nix develop -c`). The new workflow scripts carry their own local-`origin` harnesses: `test-adr-reserve.sh` **10/10**, `test-wt.sh` **16/16**, all `shellcheck`-clean. **Issues:** closed this session — **#37** (done, ADR-0058) and **#38** (won't-do, see §4). Still open — **#40** (winget release notes, deferred to next release; see §4). (#36/#39 were closed in earlier sessions.) ## §2. What shipped — #37 clause-concept hints (ADR-0058, merged #42) The deferred ADR-0053 extension: a tier-3 **`hint.concept.*`** layer shown by **F1** when the cursor sits **inside a recognized clause**, layered under the per-form `hint.cmd.*` block. Seven topics — referential actions, `1:n`/`m:n` cardinality, primary key, unique, check, foreign key. - **Mechanism:** a new transparent `Node::Concept { topic, inner }` grammar wrapper records the clause's byte span into `WalkContext::concept_spans` (**append-only — survives the clause being fully matched**, unlike `pending_hint_mode` which clears on match and so only knows the slot boundary). `concept_topic_at_cursor` walks the full buffer and returns the **innermost** containing span. No use of the dormant `WalkBound::Position`. - **Two user forks:** detection = "anywhere inside the clause"; **all four clause families** in v1. **Mode-keyed examples** (`example.simple` / `example.advanced`) honour ADR-0053 D6 for topics reachable in both modes; `emit_tier3_block` picks by live mode. - **`/runda` caught two design gaps before any code** (clause map missed the simple-mode constraint suffix; single-`example` model collided with D6) — both fixed. **Comprehensiveness gate**: a recursive `Node::Concept` visitor cross-checks grammar wrappers ↔ `CONCEPT_TOPICS` ↔ catalogue blocks. - 21 new tests (14 resolver, 3 gates, 3 F1 integration, 1 snapshot). ## §3. The working method (ADR-0059, merged #41; fixes #43, #44) The session's main artifact — the trackable flow for the public repo: - **PRs onto a protected `main`** (always-green; one direct-push carve-out, §4), one logical change per branch, conventional prefixes, the `/runda`/DA review pasted into each PR. **Merge commits (`--no-ff`)**; never rebase/squash (append-only). - **One worktree per branch** (`-worktree-`) — never switch the primary checkout. `scripts/wt-new.sh ` (off `origin/main`, `--no-track`) / `scripts/wt-rm.sh ` (removes only the **named** worktree). - **Reserve-first ADR numbering** — `scripts/adr-reserve.sh `. The fix for the real collision problem: a contiguous integer needs an allocator and plain git branches have none, so **`main` is the registry and an atomic `git push` is the lock** (compare-and-swap, retried on contention), recorded in the append-only ledger **`docs/adr/RESERVATIONS.log`**. The number is **stable from creation** (safe in immutable commit messages + cross-refs). Supersedes ADR-0000's placeholder-until-merge default; subproject namespaces (`ADR-website/ci-NNN`) unchanged. - **Branch protection** (you applied in Gitea): require PR + the `ci / gate*` check + up-to-date-before-merge; **owner whitelisted for direct push** (the reservation ledger line, now also handoff/session docs — §4). - **Fixes found by dogfooding:** - **#43** — `wt-clean` (auto-sweep of all merged worktrees) → explicit **`wt-rm `**. The auto-sweep would have deleted long-lived branches (`website`, `ci`) since they're merged into `main` too. Also **`wt-new --no-track`**: branching off `origin/main` had set the new branch's upstream to `origin/main`, so a bare `git push` errored on a name-mismatch and suggested the dangerous `HEAD:main`. - **#44** — CI **dedupe**: `push: branches: [main]` (was `['**']`) so a push to a PR'd branch no longer runs the gate twice. On **Gitea** the `push` and `pull_request` runs were byte-identical — Gitea has **no merge-preview ref**; its `pull_request` checks out `refs/pull/N/head`, the same commit a branch push would (`docs.gitea.com/usage/actions/faq`). Keeping the gate on `pull_request` is forward-compatible: if Gitea ever adds the merge ref, the runs upgrade to testing the merged result for free. ## §4. Decisions - **#38 closed — won't build** the pre-submit-diagnostic tier-3 route. The ADR-0053 D6 deferral reasons still hold: `Diagnostic` carries no class key (a class field would have to thread through every diagnostic-creation site — broad change) for marginal value (tier-2 already surfaces diagnostics live; many classes duplicate the runtime-error/clause-concept tiers). Reconsider only if a diagnostic class has genuinely unique teaching value. Rationale recorded on the issue. - **#40 deferred** (open): wire `CHANGELOG` into komac's winget `--release-notes-url`. Best coupled to the **next `v*` release + first real winget *update* test** — the initial winget PR to `microsoft/winget-pkgs` is still unconfirmed after several days, so end-to-end validation needs a confirmed package first. - **Docs direct-push carve-out** (this handoff is the first to use it): handoff / session docs (and the reservation ledger) are **owner direct-pushed to `main`**, not PR'd. See §5 for *why* a PR doesn't work. ## §5. Process lessons (now in ADR-0059 / CLAUDE.md) - **Update a branch in ONE lane** — locally (`git fetch && git merge origin/main`), **not** the Gitea "Update branch" button when a conflict is possible. The button silently mis-resolved the README clash on #42 (dropped the `0059` index row) and, combined with a local merge, diverged the PR branch; healed with an append-only merge (no force-push). - **Primary checkout rests on `main`; feature work in worktrees.** Mid-session the primary was stuck on `feat` (bootstrap artifact), which is what made worktree cleanup awkward — there was no `main` checkout holding the scripts. Resolved by switching the primary to `main` and moving `feat` to a worktree. - **Docs-only PRs are blocked by the required gate.** `paths-ignore` (`docs/**`, `**/*.md`) means a docs-only change posts **no `ci / gate` run**, and branch protection requires `ci / gate*` — so the required check never arrives and the PR is stuck "expected/waiting." That is the concrete reason handoff/session docs are direct-pushed (§4). If docs-via-PR is ever wanted, add a "skipped → success" gate shim (or drop the paths-ignore). - **Gitea CI specifics worth remembering:** no merge-preview ref (above); the reserve script's CAS via atomic push; `--no-track` on branch creation to avoid the inherited-`origin/main` upstream. ## §6. Next - **Next session is free to pick a feature** — no specific item is queued; consult `docs/requirements.md` for the remaining backlog (e.g. **TT4 / Tier-4-in-CI** still not wired; **D3 packaging** — winget pending confirmation; the larger deferred UX items: tutorial system, session-log + markdown export V4, multi-line input I1, ER-diagram export V3). - **#40** when the next release happens (with the first winget update test). - **Use the new flow:** `wt-new` to start a branch, `adr-reserve` the moment an ADR is needed, PR onto `main`, `wt-rm` when done. Push/merge stay your steps; agents prepare but never push. ## §7. Process pins - Commits user-confirmed, no AI attribution, append-only. **Push/merge are the user's steps.** This handoff + the §4 carve-out doc amendments are direct-pushed to `main` by the owner (docs-only, paths-ignored, owner-whitelisted).