Red dev caught it ninety minutes after the merge: smoke_plan_drawing_repairs
and smoke_resize_pointer_real_plan went red because the new "a 0° wedge is
always a duplicate" rule refused two ordinary edits — creating a room over
an existing partition ring (#308's legal overlay) and resizing a wall until
it lands on a neighbour's. The premise was wrong at the model level: a
shared wall of two adjacent rooms IS two co-located owner atoms on one line,
so every shared-wall node carries a legitimate 0° pair by construction.
Bisection pinned the exact cut: with only the 0° rule reverted, both smokes
are green again; keys, incidence, the iterative walk and fail-closed stay.
Spec revision 4 records the revert and returns "an exact duplicate wall is
invisible to П1" to the status of a KNOWN LIMITATION — an honest detector
needs owner identity, which is a separate decision for the owner to make.
The zero-wedge mutant is removed with its rule; the .5-tick parity unit now
observes quantisation through valence instead of the retired duplicate
visibility; changelogs drop the over-promise.
Issue: #331
User-Visible: yes
Six normative cuts, both mirrors symmetric (spec revision 3):
- §2.1 node keys quantise to 1e-7 with the repository's canonicalisation
formula (sign·floor(|v|·1e7+0.5)/1e7, -0 normalised) — toFixed(6) keys
split one node into two on floating debris and produced two false П4
refusals on a legitimate resize (reproduced: -1e-8 vs 0). Node pairs
within 2e-7 of each other (raw coordinates) are ONE node, and the
node-to-wall incidence uses the same quantum.
- §2.2 a ~0° wedge IS a violation: two rays leaving a node the same way are
a duplicated or overlaid wall (a butt joint yields 180°, never 0°) — the
worst degenerate case was invisible while 0.5° was refused.
- §2.3/§2.4 the wall run is an iterative edge walk over the collinear
component: no recursion (10 000 atoms answered, not RangeError), no
silently dropped fork (the old .find lost every branch but the first),
O(E) by construction, and collinearity is measured against the BASE
segment's axis so an arc of 0.9°-per-atom pieces cannot pose as one wall.
- §2.5 an exception while judging the CANDIDATE refuses the write with the
junction.limit_check_failed toast (fail-closed, as the #278 guard); the
baseline branch stays fail-open by design and the smoke proves the
asymmetry by breaking only the second call of the deterministic pair.
- §2.6 the python mirror narrows its except on the candidate side only:
a genuine migration bug (TypeError) surfaces as an honest WS error, while
a previous-side bug keeps the wide "no baseline" fallback — the two AC6
cases pin the asymmetry so swapped sides turn a unit red.
Parity fixtures gain the new boundary classes (debris node, duplicate wall,
collinear fork); four new mutants pin the filter, the key precision, the
dropped branch and the fail-open hole.
Issue: #331
User-Visible: yes
Six cuts, zero verdict changes (spec §3; equivalence pinned by units, the
parity suite and the smokes):
- §4.1 the CPU chain of ws_config_set and ws_plan_optimize runs in the
executor; write_lock still serialises writes, only the HA event loop is
freed (2.8 s of blocking per 576-atom write before).
- §4.2 the stored document's violation counts are cached on the runtime by
rev (store.py junction_baseline); a repeated write never re-judges
`previous`. validate_junction_limits takes baseline_counts and returns the
candidate's counts to cache after a successful save.
- §4.3 П3 builds its node index once per check in both mirrors
(289→11 ms TS, 285→~50 ms py).
- §4.5 П4 uses a bucket grid with the threshold as cell size in both
mirrors (104→19 ms TS, 372→44 ms py); pair enumeration switches to
lexicographic order — same verdict set, equivalence pinned against a
brute-force oracle on cell borders.
- §4.6 a document already carrying the current catalogue is judged as-is:
a no-op re-migration cost 815 ms py / 69 ms TS. Legacy documents migrate
exactly as before (the #329 H1 test stays green).
- §4.7 П5 shares one junction-topology pass per check and pays the masonry
union only when multi-wall nodes exist — and the resize path hands over
the preflight's own artifact, so a pointermove never builds the union
twice (4.2 s → 88 ms full candidate on the benchmark grid).
The frontend baseline is cached per (document identity, config epoch): ten
pointermoves make N+1 limit computations, not 2N — pinned by the smoke on a
real pointer gesture.
demo/benchmark_junction_limits.mjs (npm run benchmark:junction-limits) pins
the budgets for both mirrors: TS full candidate ≤100 ms (measured 88), py
warm validate ≤250 ms (measured 45), cold legacy ≤3.5 s — that path is
one-off and lives in the executor.
Issue: #330
User-Visible: yes
П3 measures the WALL, not the catalogue atom: a short filler segment that
compensates a thickness step (owner's fixture, 5 cm = (30-20)/2) is a legal
continuation of a long same-thickness wall, so the rule walks the maximal
collinear run through the shared nodes before judging the length.
Resize stops at the last allowed position and names the broken rule instead
of the generic "geometry cannot be saved"; the Thickness dialog refuses
through its own toast. Both channels are pinned by demo/smoke_junction_limits
plus three mutants (angle threshold, write barrier, degenerate apex bevel).
Issue: #329
User-Visible: yes
The baseline for inheritance was the raw previous document, which for a
legacy space carries no wall catalogue at all — so every inherited short
segment of a real plan looked new and the resize smoke's legitimate write was
refused (executed: two 5 cm segments against their own 30 cm thickness).
Both sides now cross commitWallSegmentModel first, and inheritance is counted
per rule rather than per subject, because a structural write re-keys the
carriers it re-atomises.
Issue: #329
User-Visible: no
The owner's five limits as pure functions: minimum 15 degrees between
neighbouring rays of a node (a straight wall through the node is a 180 pair,
not a violation), at most 6 walls per node, a segment at least
max(20 cm, its own thickness), 5 cm clearance between non-incident nodes and
between a node and a foreign wall (a T-joint sitting exactly on that wall is
incidence, not a near miss), and a room interior of at least 25 cm2 after the
masonry is subtracted. Thresholds are absolute and do not scale with cell_cm.
newViolations() implements the spec's inheritance boundary: only violations
introduced by the write are reported.
Issue: #329
User-Visible: no
Sergey Matyunin