feat(showcase): add pond-edge (nature)

The fourth piece in the nature category: a pond margin on a raised soil
disc, 3.20 x 2.63 m. The bank slopes from turf through a band of wet mud
into a shallow basin, and the disc's cut edge shows its soil horizons.
The water is its own mesh, a sheet at a declared level of 0.115 m, rippled
in low rings from the cattail clump, each stem, the branch and two stones,
calm round everything floating, with its rim run 50 mm on under the bank.
Opaque, depth-tinted from olive shallows to a near-black middle, with
EEVEE-traced reflections. A cattail clump of 34 arching strap leaves and
five stems, each threaded through a velvet seed head with a bare spike;
nine rush and sixteen turf tufts of V-section blades; five notched lily
pads (veins, bronze rim, maroon underside) and two water lilies (sepals,
three petal rings, stamen crown); five wet stones on the shoreline, a
barked branch running into the water with broken ends, pebbles and fallen
leaves. Nine materials: water, bank mud, reed, seed head, lily pad, lily
flower, stone, wood, leaf litter.

Blender: E:\Blender-Developer-Tools\.scratch\5.2\blender-5.2.1-windows-x64\blender.exe
reports "Blender 5.2.1 LTS". 4.5 LTS and 5.1 are left to CI (not run locally).

Recomputed budgets (5.2.1):
- 37602 tris (band 36900-38300); LOD1 0.5000, LOD2 0.2200
- 9 materials: water 5824, soil 5614, reed 8162, seed head 1400, pad 1390,
  flower 1440, stone 2046, wood 234, litter 400 faces
- UVs in 0..1, overlap 0; AABB 3.2040 x 2.6342 x 1.5071 m (read off the
  vertices), zmin 0; collider 96 tris (ceiling 120); bake FINISHED;
  glTF 3140704 B
- hygiene all 0, zero coplanar cross-shell pairs (drafts caught petals
  rooted on one axis, two stems sharing a ring frame, level blade root caps,
  a leaf parallel to its soil face; fixed by staggering, not bands)
- rooted reeds: 39/39 leaves and stems 0.0397-0.0445 m under the mud
  (band 0.020-0.070)
- floating pads: 5, freeboard 0.00149 m (band -0.0005-0.0040), draft
  0.00150 m (band 0.0005-0.0040), tilt <= 0.011 deg (cap 3)
- water: level 0.11500 m (0.115 +- 0.0015), ripple 0.00439 m (band
  0.0015-0.0090)
- heads: 5 on 5 distinct stems, <= 0.00008 m off-axis (cap 0.002), spike
  0.093-0.136 m (floor 0.06)
- enclosed: bank >= 0.01366 m over every rim vertex and midpoint (floor
  0.008), 208 rim edges
- cover: 598 shells, 0 loose
- two default runs print identical measurements

Falsifiers (flag -> measured -> exit):
- --skip-decimate -> LOD1 ratio 1.0000 -> 9
- --stray-vert -> loose_v 1 -> 15
- --lift-z -> zmin 0.05000 -> 16
- --float-reeds -> lowest vertex -0.0303 to -0.0255 m (above the mud) -> 17
- --sink-pad -> pad 0 freeboard -0.00251, draft 0.00550 -> 18
- --flat-water -> ripple 0.00000 -> 19
- --slip-heads -> heads 0.0079-0.0080 m off-axis -> 20
- --short-water -> bank -0.03736 m over the rim -> 21
- --float-cover -> 108 of 598 shells loose -> 22
Tris (37602) and AABB identical under every falsifier; every other
piece-specific budget green in each run. --sink-pad (first 12 mm) and
--slip-heads (first 25 mm) were resized to 4 mm / 8 mm because at the
larger sizes the part also came loose and tripped the cover budget.

Render: render_hero.py wrote hero and preview. Framing fill x 0.688,
y 0.872, margins >= 0.056. Asset-quality floors pass (edge90 0.043); a
violation remaps to 23.

Asset sheet (docs/gallery/asset-sheets/pond-edge.webp): not the
least-designed object in the lineup; the hydrant and the wheelbarrow are
plainer. Isolated it reads at once as a pond: cattails, rushes, pads,
lilies, stones, branch, ripple rings in the water's sheen. The first sheet
showed the near-mirror water blowing out white under the bright sweep;
roughness 0.08-0.16 and specular 0.32 fixed it. Weak points: the pond
parts are small at sheet scale, and the disc's skirt is a plain earth band.

Contact sheet: luma 0.2383 against calibration 0.2369-0.2428 (in band).
Stage 0.2244 against 0.1919-0.2517 (in band). Saturation 0.1964 against
0.1525-0.2367 (in band; first draft 0.2490, fixed by a paler wedge).
Wedge warmth +0.0841 against -0.1440/+0.1052/+0.0921 (in range).
Thumbnail legibility good.

Also updated: README, CLAUDE.md and ROADMAP counts and entries (cattail
reeds struck from the Nature alternates as shipped as pond-edge), the
asset_sheet.py SELECT row, catalog.json, plugin.json and the regenerated
gallery. build_gallery, check_site_links (105 pages, 0 failures),
check_falsifier_targets, check_exit_code_readme, check_engine_id,
check_gallery_images and the count check all pass.

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>

Author: TMHSDigital

.cursor-plugin/plugin.json

@@ -187,6 +187,7 @@
     "showcase/boulder-cluster",
     "showcase/floor-fan",
     "showcase/motor-scooter",
-    "showcase/bowling-pins"
+    "showcase/bowling-pins",
+    "showcase/pond-edge"
   ]
 }

CLAUDE.md

@@ -22,7 +22,7 @@ rules/<rule-name>.mdc          - Anti-pattern rules, 9 total
 templates/<template-name>/     - Starter projects, 3 total
 snippets/<snippet-name>.py     - Standalone code patterns, 27 total
 examples/<name>/               - Runnable smoke-gated examples, 60 total (+ gallery.json)
-showcase/<name>/               - Budget-conformance props, 49 pieces, each with a gallery `category` (sibling of examples/; see showcase/README.md § Categories)
+showcase/<name>/               - Budget-conformance props, 50 pieces, each with a gallery `category` (sibling of examples/; see showcase/README.md § Categories)
 scripts/build_gallery.py       - Regenerates docs/gallery/ from examples/gallery.json + showcase/gallery.json
 scripts/site/                  - Vendored landing-page build (Jinja2); tokens.css is the shared palette
 tests/check_site_links.py      - Internal link/anchor/alt gate over the built site (docs/)

README.md

@@ -18,7 +18,7 @@
 </p>
 
 <p align="center">
-  <strong>16 skills</strong> &nbsp;&bull;&nbsp; <strong>9 rules</strong> &nbsp;&bull;&nbsp; <strong>3 templates</strong> &nbsp;&bull;&nbsp; <strong>27 snippets</strong> &nbsp;&bull;&nbsp; <strong>60 examples</strong> &nbsp;&bull;&nbsp; <strong>49 showcase pieces</strong>
+  <strong>16 skills</strong> &nbsp;&bull;&nbsp; <strong>9 rules</strong> &nbsp;&bull;&nbsp; <strong>3 templates</strong> &nbsp;&bull;&nbsp; <strong>27 snippets</strong> &nbsp;&bull;&nbsp; <strong>60 examples</strong> &nbsp;&bull;&nbsp; <strong>50 showcase pieces</strong>
 </p>
 
 <p align="center">
@@ -37,7 +37,7 @@
 
 ## Overview
 
-This repository ships **16 skills, 9 rules, 3 templates, 27 snippets, 60 examples, and 49 showcase pieces** for Blender Python development targeting Blender 5.2 LTS (current stable) with Blender 4.5 LTS fallback support. Blender 5.1 is prior stable.
+This repository ships **16 skills, 9 rules, 3 templates, 27 snippets, 60 examples, and 50 showcase pieces** for Blender Python development targeting Blender 5.2 LTS (current stable) with Blender 4.5 LTS fallback support. Blender 5.1 is prior stable.
 
 The content is consumed by AI coding agents reading these files directly from a checkout — **there is no MCP server in this repository, and none is required**. Cursor applies `rules/*.mdc` automatically wherever their scope globs match and takes skills by name in chat; Claude Code reads `skills/` and `rules/` from the project workspace, or from this repo kept as a referenced checkout. Any agent that can read files in a workspace can use it the same way. There is no build step for the content — edit the Markdown and Python files directly.
 
@@ -106,7 +106,7 @@ per-script exit-code model, are in
 Budget-conformance props. Not examples. Conventions: [`showcase/README.md`](showcase/README.md).
 
 <details>
-<summary><strong>49 showcase pieces</strong> — click to expand the preview grid</summary>
+<summary><strong>50 showcase pieces</strong> — click to expand the preview grid</summary>
 
 <p align="center">
   <a href="showcase/shipping-crate/"><img src="showcase/shipping-crate/preview.webp" width="24%" alt="Shipping crate: a wooden slat crate stencilled PORT ROYAL and NO 17, with iron corner brackets and an end handle, on a dark studio floor, warm wedge on the back wall" /></a>
@@ -158,6 +158,7 @@ Budget-conformance props. Not examples. Conventions: [`showcase/README.md`](show
   <a href="showcase/floor-fan/"><img src="showcase/floor-fan/preview.webp" width="24%" alt="Floor fan: a sage-green 1950s pedestal fan with a chrome wire guard over four brass blades, its head turned on a tilt yoke, a telescoping column and a round cast base, its cord looped to a plug, on a dark studio floor" /></a>
   <a href="showcase/motor-scooter/"><img src="showcase/motor-scooter/preview.webp" width="24%" alt="Motor scooter: a pastel sea-green 1960s step-through scooter with a two-tone cream and oxblood dual saddle, louvred side cowls, a curved chrome-trimmed leg shield, split-rim wheels and a black silencer, on its centre stand on a dark studio floor" /></a>
   <a href="showcase/bowling-pins/"><img src="showcase/bowling-pins/preview.webp" width="24%" alt="Bowling pins: ten white pins with red neck stripes racked on a dark pin deck at the end of a glossy maple lane with arrows and dots, a marbled violet ball on the approach, between gutters and kickbacks, on a dark studio floor" /></a>
+  <a href="showcase/pond-edge/"><img src="showcase/pond-edge/preview.webp" width="24%" alt="Pond edge: a dark rippled pond on a raised soil disc, cattails with brown seed heads and rush tufts on the far bank, notched lily pads and two pink-white water lilies, wet stones and a branch at the waterline, on a dark studio floor" /></a>
 </p>
 
 [`shipping-crate`](showcase/shipping-crate/) — procedural crate through UVs, bake, LOD, collider, and Unity glTF, asserting recomputed budgets. Falsifier `--skip-decimate` exits 9.
@@ -254,6 +255,8 @@ Budget-conformance props. Not examples. Conventions: [`showcase/README.md`](show
 
 [`bowling-pins`](showcase/bowling-pins/) — the fourth `sports` piece: procedural pin deck end of a ten-pin lane (a slab of 39 V-seamed maple boards crossed by the pin-deck joint, ten inlaid pin spots on a 12 in triangle, targeting arrows and range dots, channel gutters, cappings, kickbacks with sloped noses, aluminium caps and kick plates, a steel pit edge and sleepers; ten pins lathe-turned from the regulation profile table with red neck stripes and a crown band; an 8.5 in marbled ball drilled by an exact Boolean with a countersunk thumb hole and two parallel finger holes), whose sleepers grounded, pins centred on their spots, seated, plumb and to size, spots on the exact lattice, turned profile, ball resting on the lane at its radius, hole depths, bores, span and bridge, boards flush and parallel and single connected assembly are recomputed from the mesh, through the same pipeline. Falsifiers `--float-sleeper` exits 16, `--offset-pin` 17, `--float-pin` 18, `--lean-pin` 19, `--wide-rack` 20, `--fat-neck` 21, `--float-ball` 22, `--shallow-holes` 23, `--proud-board` 24, `--lift-arrows` 25.
 
+[`pond-edge`](showcase/pond-edge/) — the fourth `nature` piece: procedural pond margin on a raised soil disc (a bank sloping from turf through wet mud into a shallow basin, its cut edge showing its soil horizons; the water its own rippled sheet at a declared level, its rim run on under the bank; a cattail clump of arching strap leaves and five stems, each threaded through a velvet seed head with a bare spike; rush and turf tufts; five notched lily pads and two layered water lilies floating; wet stones, a half-submerged branch, pebbles and fallen leaves), whose leaves and stems rooted in the mud, pads floating at the water level, water level and ripple band, seed heads threaded on their stems, water enclosed by the bank and cover joined to the soil are recomputed from the mesh, through the same pipeline. Falsifiers `--float-reeds` exits 17, `--sink-pad` 18, `--flat-water` 19, `--slip-heads` 20, `--short-water` 21, `--float-cover` 22.
+
 </details>
 
 ## Examples

ROADMAP.md

@@ -157,7 +157,7 @@ Not committed; target list for the next content version. (v0.3.0 shipped the smo
 - Weathervane as a game-prop showcase piece — arrow and cardinal arms on a spindle: the arrow's pivot bore coaxial with the spindle and the arrow statically balanced (centroid on the pivot axis within a band)
 - Showcase pieces above this line are category `village`. Candidates for the other categories (`showcase/README.md` § Categories):
   - **Sports:** ~~basketball hoop (pole, backboard, rim, hung net)~~ **SHIPPED** as `showcase/basketball-hoop/` — gooseneck pole on a bolted anchor plate, braced framed board with painted square, regulation rim, twelve-loop net hung on the rim hooks; `--drop-net` exits 18 on the loops threaded through the hooks while the envelope holds, `--tilt-rim` 19 on rim height/size/level, `--skip-decimate` 9 on the LOD1 ratio band; ~~soccer goal (tube frame, netting)~~ **SHIPPED** as `showcase/soccer-goal/` — 5 × 2 m youth goal, oval extrusion mitred and welded at the corners, cast brackets, foot connectors and hubs, sloped supports and a staked steel ground frame, sagging diamond-mesh net on a red head rope through 53 clips, turf patch with a goal line; `--float-bar` exits 16 on every ground bar bedded in the turf, `--short-support` 17 on the supports seated in their sockets, `--unclip-net` 18 on the head rope through every clip, `--wide-mouth` 19 on the clear mouth size, `--taut-net` 20 on the back panel's sag, while the envelope holds; tennis net on posts, ~~weight rack with plates and dumbbells~~ **SHIPPED** as `showcase/weight-rack/` — half rack of punched, numbered uprights on bolted, padded feet, J-hooks with UHMW saddles and spotter arms on pull pins, plate-storage horns, a loaded Olympic barbell (knurled shaft, bumpers with raised numerals, iron change plates, spring clips) and two hex dumbbells; `--float-foot` exits 16 on every pad and dumbbell head on the floor, `--offset-pin` 17 on the pins coaxial with their holes, `--float-bar` 18 on the bar seated in both saddles, `--hook-high` 19 on the bar level, `--gap-plate` 20 on the plates seated along their sleeves, `--odd-load` 21 on the balanced load, `--loose-horn` 22 on one connected rack, while the envelope holds; alternates ~~bowling pins and ball~~ **SHIPPED** as `showcase/bowling-pins/` — pin deck end of a ten-pin lane: 39 V-seamed maple boards and a dark pin deck with ten inlaid spots on a 12 in triangle, arrows and range dots, channel gutters, kickbacks with aluminium caps and kick plates, a steel pit edge on sleepers; ten pins turned from the regulation profile table with red neck stripes and a crown band; an 8.5 in marbled ball with a countersunk thumb hole and two parallel finger holes; `--float-sleeper` exits 16 on every sleeper grounded, `--offset-pin` 17 on the pins centred on their spots, `--float-pin` 18 on the pins seated, `--lean-pin` 19 on the pins plumb and to size, `--wide-rack` 20 on the 12 in spot lattice, `--fat-neck` 21 on the turned profile, `--float-ball` 22 on the ball resting at its radius, `--shallow-holes` 23 on the finger holes, `--proud-board` 24 on the boards flush and parallel, `--lift-arrows` 25 on one connected assembly, while the envelope holds; skateboard
-  - **Nature:** ~~pine tree (trunk, tiered branch whorls)~~ **SHIPPED** as `showcase/pine-tree/` — buttressed trunk with surface roots, ten seeded whorls of limbs seated in the bark, faceted needled shoots, dead stubs and cones; `--float-branches` exits 17 on the branch seat, `--lean-crown` 19 on trunk plumb, `--bunch-whorls` 20 on whorl spacing, while the envelope holds; ~~boulder cluster~~ **SHIPPED** as `showcase/boulder-cluster/` — a speckled granite block, a banded sandstone boulder split in two with matching crack faces and bedding, and a sandstone slab resting on a smaller granite boulder, cut by cleavage planes with weathered bevels, with lichen crusts and moss cushions, sunk into a soil mound with grass tufts, pebbles and wildflowers; `--perch-boulder` exits 17 on every boulder sunk into the soil, `--float-slab` 18 on the slab seated on its support, `--perch-slab` 19 on its mass centre over its footprint, `--skew-half` 20 on the split halves matching, `--sunny-lichen` 21 on growth facing up or north, `--float-cover` 22 on the ground cover rooted in the soil, while the envelope holds; ~~fallen log with fungus~~ **SHIPPED** as `showcase/fallen-log/` — furrowed log on a bowed axis with peeled, galleried sapwood, a hollow saw-cut butt, a splintered top, broken stubs, moss cushions, three tiers of bracket fungi, and a soil mound with toadstools, ferns and fallen leaves; `--hump-ground` exits 17 on the log bedded along its length, `--float-fungi` 18 on the brackets rooted in the bark, `--tilt-ground` 19 on the mass centre over the contact patch, `--sunny-moss` 20 on moss facing up or into the shade, `--float-litter` 21 on the ground cover rooted in the soil, while the envelope holds; tree stump with mushrooms; alternates flowering shrub, cattail reeds
+  - **Nature:** ~~pine tree (trunk, tiered branch whorls)~~ **SHIPPED** as `showcase/pine-tree/` — buttressed trunk with surface roots, ten seeded whorls of limbs seated in the bark, faceted needled shoots, dead stubs and cones; `--float-branches` exits 17 on the branch seat, `--lean-crown` 19 on trunk plumb, `--bunch-whorls` 20 on whorl spacing, while the envelope holds; ~~boulder cluster~~ **SHIPPED** as `showcase/boulder-cluster/` — a speckled granite block, a banded sandstone boulder split in two with matching crack faces and bedding, and a sandstone slab resting on a smaller granite boulder, cut by cleavage planes with weathered bevels, with lichen crusts and moss cushions, sunk into a soil mound with grass tufts, pebbles and wildflowers; `--perch-boulder` exits 17 on every boulder sunk into the soil, `--float-slab` 18 on the slab seated on its support, `--perch-slab` 19 on its mass centre over its footprint, `--skew-half` 20 on the split halves matching, `--sunny-lichen` 21 on growth facing up or north, `--float-cover` 22 on the ground cover rooted in the soil, while the envelope holds; ~~fallen log with fungus~~ **SHIPPED** as `showcase/fallen-log/` — furrowed log on a bowed axis with peeled, galleried sapwood, a hollow saw-cut butt, a splintered top, broken stubs, moss cushions, three tiers of bracket fungi, and a soil mound with toadstools, ferns and fallen leaves; `--hump-ground` exits 17 on the log bedded along its length, `--float-fungi` 18 on the brackets rooted in the bark, `--tilt-ground` 19 on the mass centre over the contact patch, `--sunny-moss` 20 on moss facing up or into the shade, `--float-litter` 21 on the ground cover rooted in the soil, while the envelope holds; tree stump with mushrooms; alternates flowering shrub, ~~cattail reeds~~ **SHIPPED** as `showcase/pond-edge/` — a pond margin on a raised soil disc: a rippled water sheet at a declared level, its rim run under a sloped mud bank, a cattail clump with seed heads threaded on their stems, rush tufts, notched lily pads and water lilies, wet stones and a half-submerged branch; `--float-reeds` exits 17 on every leaf and stem rooted in the mud, `--sink-pad` 18 on the pads floating at the water level, `--flat-water` 19 on the water level and ripple band, `--slip-heads` 20 on the seed heads threaded on their stems, `--short-water` 21 on the water enclosed by the bank, `--float-cover` 22 on the cover joined to the soil, while the envelope holds
   - **Household:** ~~articulated desk lamp~~ **SHIPPED** as `showcase/desk-lamp/` — stepped cast base, parallelogram arm sections pinned through knuckle bosses, three springs hung on cross bars, domed shade with reflector, lamp, flex and plugged cable; `--offset-pin` exits 17 on the pins coaxial with their eyes, `--unhook-spring` 18 on the spring ends seated on their bars, `--hollow-base` 19 on the mass centre over the base footprint, while the envelope holds; ~~office chair (five-star base, casters)~~ **SHIPPED** as `showcase/office-chair/` — polished five-star base with ribbed spokes and swivelled twin-wheel casters, chrome gas lift in a telescoping cover, tilt mechanism with knob and levers, contoured seat with a piped welt, reclined mesh back with lumbar pad and headrest on an aluminium spine, height-adjustable T-arms; `--float-caster` exits 16 on every wheel on the floor, `--skew-spoke` 17 on the five-star spacing and plumb stems, `--offset-column` 18 on the gas lift coaxial with hub and socket, `--uneven-arms` 19 on mirrored level armrests, `--loose-wheel` 20 on one connected assembly, while the envelope holds; kitchen stool, mini fridge; alternates ~~floor fan~~ **SHIPPED** as `showcase/floor-fan/` — 1950s oscillating pedestal fan: hollow cast base on a gasket with a speed switch and badge, telescoping column with a height-lock collar, strap yoke with a tilt knob, slotted motor housing with an oscillation knob, two-half wire guard welded to clipped rim rings, four swept brass blades on a hub with a spinner nut, cord to a plug; `--offset-hub` exits 17 on the rotor coaxial with the guard, `--short-spoke` 18 on every spoke seated in its rim ring, `--lean-column` 19 on the column plumb and on the base's axis, `--long-blades` 20 on the blade-tip clearance band, `--skew-blade` 21 on equal blade spacing, `--hollow-base` 22 on the tip-over angle, `--loose-spinner` 23 on one connected assembly, while the envelope holds; laundry basket
   - **Vehicles:** ~~quad drone~~ **SHIPPED** as `showcase/quad-drone/` — two-tone moulded shell with battery, GPS, grilles and visor, four folding arms hinged on pinned clevises, slotted motors with twisted two-blade props, rubber-footed skids, three-axis gimbal camera; `--float-foot` exits 16 on every foot grounded, `--unlock-arm` 17 on the motor axes on an exact X, `--long-blades` 18 on the prop-disc clearance, `--narrow-skids` 19 on the mass centre inside the landing footprint, `--drop-lens` 20 on one connected assembly, while the envelope holds; traffic cone and barrier set, ~~hover bike~~ **SHIPPED** as `showcase/hover-bike/` — sculpted two-tone fuselage with panel seams, intake grilles, tail vents and cooling fins, a stitched pleated saddle, clip-on bars with grips, levers and an emissive instrument cluster, a flyscreen and headlight pod, two exhaust nozzles, two ducted fans (airfoil shrouds, canted stator vanes, handed seven-blade rotors), booms with foot pegs, and two landing skids on struts; `--float-skid` exits 16 on both skids grounded, `--offset-hub` 17 on the hubs coaxial with their shrouds, `--long-blades` 18 on the blade-tip clearance band, `--odd-hull` 19 on the fuselage's mirror symmetry, `--skew-blade` 20 on equal blade spacing, `--narrow-skids` 21 on the mass centre inside the skids' contact polygon, `--pop-lens` 22 on one connected assembly, while the envelope holds; sci-fi cargo loader; ~~motor scooter~~ **SHIPPED** as `showcase/motor-scooter/` — 1960s Italian step-through: pressed-steel tail with bulbous side cowls (louvres on the engine side), floorboard with runner strips pressed up into the tail and into a curved, chrome-rimmed leg shield with a horn cast, single-sided trailing-link front end with a crested mudguard, headset with headlamp, speedometer and mirrors, two-tone piped dual saddle, split-rim wheels in block-tread tyres, engine case, silencer, luggage rack and centre stand; `--float-tyre` exits 16 on both tyres and both stand feet grounded, `--toe-wheel` 17 on the axles level and parallel, `--steep-head` 18 on the steering trail, `--odd-body` 19 on the body's mirror symmetry, `--short-wheelbase` 20 on the wheelbase band, `--narrow-stand` 21 on the mass centre inside the support polygon, `--pop-speedo` 22 on one connected assembly, `--lift-shield` 23 on the leg shield seated in the floorboard, while the envelope holds; alternates sci-fi supply crate
 - `persistent` app-handler witness — handlers registered without `@bpy.app.handlers.persistent` are dropped by `wm.read_homefile`/file load while persistent ones survive; assert the registered-handler set before and after a reload (silent loss AI code hits)