Session handoff — 2026-06-10 (60)

Sixtieth handover. Continues from handoff-59 (tracking reconciliation

V5/H3/V5a sweep + T3 compound-PK FK). This session did three things: (1) verified the Claude Code 2.1.170 upgrade is healthy; (2) finished the GitHub→Gitea migration cleanup and added tea issue-tracking conventions; (3) the big one — completed requirement V1, relationship visualization, designed in ADR-0044 and implemented end-to-end with two /runda passes.

§1. State at handoff

Branch: main. HEAD 0a34303. 5 commits this session (b17148b → 0a34303); push is the user's step.

Tests: 2207 passing / 0 failing / 1 ignored (lib 1586, it 429, typing_surface_matrix 192; the 1 ignored is the long-standing doc-test). Clippy clean (nursery, all targets). +14 over the handoff-59 baseline of 2193.

This session's commits:

0a34303 feat: compound-FK bus routing + complete V1 relationship visualization (ADR-0044)
a0ee323 feat: show table renders relationships as compact diagrams (ADR-0044)
cad90ec feat: show relationship <name> renders a styled two-table diagram (ADR-0044)
bb02dfb docs: ADR-0044 relationship visualization (V1); accepted
b17148b docs: scrub GitHub-specifics after Gitea migration; add tea issue conventions

§2. Repo migration: GitHub → Gitea (commit `b17148b`)

The repo moved off GitHub to a self-hosted Gitea at git.lazyeval.net (oli/rdbms-playground). tea auto-detects this repo correctly off the remote even though the machine's default tea login is a different host (git.oliversturm.com) — verified.

Durable GitHub-specifics scrubbed: Cargo.toml repository URL; requirements.md backlog note ("now tracked as Gitea issues"); ADR-0001 Amendment 1 reopens the prebuilt-binary distribution channel (was "GitHub releases") as an undecided choice for a future distribution ADR (the Decision text was not rewritten, per supersede-don't-rewrite).
Left as historical: all docs/handoff/*.md (append-only log).
CLAUDE.md gained an Issue tracking working-style bullet + an Issue tracking — Gitea via tea section (adapted from another project; repo coordinates corrected, tea gotchas kept). Working method now: file bugs/enhancements as Gitea issues, cross-reference in commits/handoffs; requirements.md + ADRs remain the source of truth for scope/decisions; a change to a decided area still earns an ADR. No heavyweight planning workflow (we're near completion of the initial requirements).
No open Gitea issues; the 18-issue campaign backlog (#1–#18) is all closed. V1 lives in requirements.md, not an issue.

§3. V1 — relationship visualization (the big one)

ADR-0044 (docs/adr/0044-relationship-visualization.md, Accepted 2026-06-09, implemented 2026-06-10). Resolves ADR-0016 OOS-1 and closes requirements.md V1 ([x]). The relationship-as-line-art half that had been "repeatedly pushed away" now renders as Style-A two-table connector diagrams.

Design forks (all user-chosen):

Style A (two structure boxes + connector) over a compact key card or crow's-foot ER.
Reach = "relationship-relevant" (over global / show-only): diagrams where the relationship is the subject — show relationship <name>, show table <T>, and add/drop relationship echoes; incidental DDL echoes (add column, drop index, change column, plain create table) keep the prose References: / Referenced by: form.
show table layout: focal structure box, then a Relationships section of stacked compact per-relationship diagrams (over a focal-centred subgraph — no crossing lines, scales via scroll, two-boxes-wide fits any terminal).

Visual conventions: child (FK holder) on the left, parent (referenced) on the right, arrow → (child references parent), n … 1 cardinality, referential actions beneath, and a bold title row + rule on every box so a table name can't read as a column. Compound FKs route a shared bus (each endpoint stub merges into a vertical channel that splits to the paired endpoints) plus an explicit (a, b) ▶ P.(x, y) pairing line. Self-referential FKs draw two same-named boxes. Width-aware: side-by-side when it fits, else a vertical stack fallback.

Three implementation increments:

cad90ec — show relationship <name> full diagram (both tables as full structure boxes).
a0ee323 — show table compact stacked diagrams + the Diagram|Prose render mode.
0a34303 — compound-FK bus routing + pairing line, self-referential diagrams, V1 → [x].

Two /runda passes. The design pass (pre-build) caught an inverted-architecture assumption carried in from a code survey (rendering is App-side, not worker-side; width was claimed "already tracked" but wasn't; show relationship built prose in the worker). The implementation pass confirmed ADR-compliance, UTF-8/byte-range safety, and edge-case routing, and added a compound-from-data glue test. The §3 last-resort helper line was considered and rejected (vertical fallback + ratatui truncation cover all realistic cases).

§4. Key implementation facts (read before touching the renderer)

Rendering is App-side. output_render.rs helpers (render_structure, render_data_table, and the new diagram functions) are called from app.rs, never db.rs. The worker returns structured data (TableDescription); the App formats it. (An Explore survey got this backwards — verify architecture claims against the code, not a summary.)
The diagram renderer lives in output_render.rs under the // ── Relationship visualization (ADR-0044) banner: a styled Seg engine (text + OutputSpan runs that compose by concatenation with offset-shifting); render_box (full or compact box with a title row); gutter_seg + junction (the bus connector — routes all endpoint pairs, reduces exactly to the single-column jog); compose_side_by_side / compose_vertical; render_relationship_layout (width dispatch + pairing line); render_relationship_diagram (the show relationship entry, builds full DiagramTables from RelationshipDiagramData); render_structure_with_diagrams (the show table entry: focal box
- compact diagrams; render_structure was refactored into section helpers — structure_box_lines / relationship_prose_lines / index_lines / constraint_lines — with byte-identical prose output so the old snapshots held).
show relationship worker path: db.rs RelationshipDiagramData (rel + both endpoint TableDescriptions)
- Database::show_relationship + do_show_relationship; runtime CommandOutcome::ShowRelationship (boxed — two TableDescriptions dwarf the other variants) reroutes a named relationship before the prose show_list fallback; event DslShowRelationshipSucceeded; app handle_dsl_show_relationship_success.
The Diagram/Prose split is in handle_dsl_success: it renders diagrams for ShowTable | AddRelationship | DropRelationship, prose otherwise.
Width: new App::last_output_width (default 80), set from ui.rs render_output_panel next to note_output_viewport. Snapshot at command time — no live reflow (that's V4).
Styling: four new OutputStyleClass variants (DiagramTableName / DiagramKey / DiagramCardinality / DiagramConnector), mapped in ui.rs::output_span_style to existing theme colours (no new Theme fields). Seg only ever pushes whole strings/chars, so styled-run byte ranges are always valid UTF-8 boundaries (exercised live by the add relationship rendered_text test through ui.rs's text[start..end] slice).
do_show_one's relationship prose branch is now dead-for-users (the reroute supersedes it) but retained — reachable via the Database::show_list worker API, covered by a worker test, and a candidate text fallback for a future non-visual display option (cf. ADR-0044 OOS-7 relationship-display setting). Documented in db.rs.
Two bugs the tests caught (both in compact boxes, which the single-relationship full-box tests didn't exercise): an eager widths[1] index panic (then_some → then), and body-cell padding under title-widening (pass the widened widths[0], not the pre-widening label_w).

§5. Remaining open landscape

Still [/] partial / [~] / larger (unchanged from handoff-59):

V2 / S3 multi-result tabs — output-model redesign.
V3 whole-DB ER export; V4 scrollable journal + Markdown (the home for diagram live-reflow, OOS-1 here).
A1 app-commands — blocked on seed (SD1) + hint (H2).
DOC1 reference docs; X1 logging density.

[ ] not started: H2 hint, SD1 seed, C4 m:n, B3 query-timeout, I1 multi-line, I1b readline, I5 cancellation, TT5 CI (now Gitea Actions, ties into ADR-0001's reopened distribution question), TT4 PTY (spec-only), D1–D3 distribution, NFR-1…7.

ADR-0044 OOS for later: OOS-7 user-configurable relationship-display setting (always-prose / always-diagram / auto-by-width); compound display polish if needed.

§6. Next job — candidates

No forced next step. By readiness:

X1 logging — mechanical, no ADR; brings instrumentation to the CLAUDE.md "log liberally" bar (~25 tracing sites today).
TT5 CI — test infra solid (2207 green); no pipeline. Now Gitea Actions / Woodpecker, not GitHub Actions — a fresh decision tied to today's migration + ADR-0001's distribution question.
T3 residuals (ADR-0043 §4) — two messaging-only polish items (inline-FK arity error wording; compound-FK-violation friendly error names only the first pair).
V2/S3 multi-result tabs or V4 journal — larger, design-first (own ADR).

§7. How to take over

Read handoffs 58 → 59 → 60, then CLAUDE.md (now with the Issue tracking — Gitea via tea section), docs/requirements.md (V1 now [x]), docs/adr/README.md.
For relationship diagrams: read ADR-0044, then the // ── Relationship visualization block in src/output_render.rs (§4 above maps the functions).
Gitea/tea: plain tea issues works here (auto-detects git.lazyeval.net); the gotchas section in CLAUDE.md matters (stdin-hang → < /dev/null; multiline bodies via temp file; the display blind-spot for milestones/comments).
Codebase on main at 0a34303, clean, 5 commits unpushed.
Process pins that paid off this session: verify architecture claims against the code, not a survey (the §3 inversion); /runda after design AND after implementation (both found real things); tests on the compact path caught bugs the full-box path missed — exercise every variant; escalate genuine forks (every V1 design choice was the user's). Commits user-confirmed, append-only, no AI attribution.

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