- database/src/table.{c,h}: per-shard per-class slabs (256 rows,
malloc'd, never moved -- row addresses stable for 9b's row views),
occupancy bitmap, LIFO slot reuse, open-addressing id hash with
tombstones (ids never 0, never reused)
- field encoding walks the same .wob class-table kinds the VM walks:
scalars raw (WO_NIL_SCALAR passes through), Texts copied to db_text,
owned objects flattened recursively to db_rec, containers
element-wise; GCREF refused at encode (the GC bulkhead, defensively)
- two one-way copy gates: insert copies VM values in, read allocates
fresh VM values out -- no VM pointer in a slab, no slab pointer in
the VM, proven by mutating originals after insert
- id discipline: per table per shard, S+1 step N; owner = (id-1) % N;
N-parametric, runs at N=1 until iteration 8, tested at N=3
- choke points: wo_row_insert/wo_row_remove carry the INDEX HOOK
sites Task 4 attaches to; nothing else mutates storage
- runtime/Makefile links database/src into every wovm + test binary
- test_table 827/0 ASan+UBSan; oop-e2e 71/0; log-watcher 7/0;
binding doc docs/plan/oop-vm/04-db-binding.md; CODE-LOGIC.md beside
the code; plan Task 1 checked off
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
- 9b spec gains section 6 "Ownership, borrows, and GC across the
engine boundary": two one-way copy gates (no VM pointer enters a
row, everything a select returns is copied out), so the collector
never traces engine memory and the engine never touches refcounts
- row views are borrows WITHOUT a runtime net: rows share the VM's
field encoding but not its header, so no borrow word backs them --
the compile-time escape rule is load-bearing alone
- cursor stability settled: scans materialize their id list before
the body, row updates through the view stay legal (raise mode
updates an indexed column mid-scan and is the proving fixture),
insert/delete on a table with an open cursor is a new WO-E5xx
- GC-pause interaction recorded: collector runs between statements,
a long scan delays slices -- accepted, documented
- iteration-7b ordering constraint: GC inference must classify before
table-field validation, diagnostic names the inference reason --
noted in 7b story, iteration-9 plan constraints, 9b plan tasks
- stories 09/09b Info sections point at the analysis; 9b plan Tasks
3/5 carry the enforceable checkboxes (ASan boundary assertion)
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
- docs/examples/employee: Department/Employee @table classes with
@unique, [dept] and [dept, salary] indexes, ref/backlink pair;
modes seed/report/staff/raise/drop per the 9b spec section 6 —
written AHEAD of the features (sample-first, like log-watcher);
README states it does not compile on today's toolchain and links
the plans that compile toward it
- report mode is the GroupBy showcase: group-and-reduce projection
{headcount, avg, min, max} ordered by avg desc, whole-query sum
for payroll; staff proves both navigation directions + index probe;
drop proves delete restrict (trap asserted)
- engine directory decision (user, 2026-08-15): database/ is its own
top-level dir, statically linked into wovm — file structures updated
in the iteration-9 plan and the 9b plan
- gap found by writing the sample: iteration 9's subset lacks a
`delete` statement and restrict needs one — added to 9b plan Task 3
- 9b plan Task 6 notes the sample is pre-authored and authoritative
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
- 00-kanban.md rebuilt: ▶ NEXT PLAN pointer (iteration 4 — emitter, corpus,
`woc build`) then six buckets — stories, in progress, done, pending,
discarded, learnings. It tracked only the Rust runtime before, so the whole
OOP track (wovm shipped, woc Tasks 1-8 shipped) was invisible.
- Board now records iteration 3's known gaps instead of silently owing them:
`?T` plumbed but unenforced; E205/E201/E203/E204 dead, so structural
interface satisfaction is unchecked.
- New discarded.md — settled rejections with reasons so they are not
re-proposed: inheritance, `abstract` newtypes, Money/SKU/Float, Dynamic/cast/
macro/extern, AOT-to-C, Menhir, shared engine state, external deployer.
- RECOVERED docs/plan/exploration/blue-green-vm/00-vision.md — gone from disk,
never committed (gitignored path), cited by five docs incl. principle 12.
- Root cause was broader: all seven forward-roadmap plans in
docs/superpowers/plans/ were untracked and ignored, on one disk only. Rules
were half-fiction — 33 of 34 exploration files were already tracked, so they
swallowed only *new* files.
- Dropped the docs ignore rules (exploration, oop-vm, superpowers/plans,
examples/agent-loop, examples/mcp-think) with a do-not-re-add comment; added
__pycache__/*.pyc. `tests/` stays ignored but warns that the next plan lands
the corpus there.
