t27f: scene renderers for the 12 archetypes and the still anomaly gate, R3 (Closes #10571)

.claude/skills/t27f/SKILL.md

@@ -90,7 +90,7 @@ the diagram core in detail, then the other surfaces and the topic-map applicatio
 | Surface: particle reels and stills | `specs/t27f/token_floor*.t27`, `lesson_reel.t27`, `reel_particles*.t27` | rendered on the Railway lab (lesson 1 EN and RU); no renderer in the repo, no MCP tool yet |
 | Surface: honeycomb map video and deck | `specs/t27f/reel.t27`, `deck.t27` | spec; stills only, through `t27f_view` |
 | Application: topic map (#1677) | `specs/t27f/topic_engine.t27`, `topic_reel.t27` | spec; drawn through the map surface; procedure below |
-| Application: content factory (epic t27#10560) | `specs/t27f/reel_factory.t27` (t27#10561) | spec with tests: an item's code and title, read keyword by keyword, give 11 features. Those pick 1 of 12 scene archetypes (best pair first, cap 4, no repeat within 2 items, then the least-used generic scene) plus an accent, a motion, a layout and 8 output formats. No renderer draws a plan yet (R3), and `lesson_reel` still draws token_floor (R4). Lessons: read the plan's spread over the whole course before trusting it. A greedy walk in course order gave 7 lessons one scene. Code counts alone handed lesson 8 the tests scene over "A test block". Gate: `tri factory`. The plan prints from a separate module, `specs/t27f/reel_factory_plan.t27` (t27#10573): `t27c gen` it, then run the zig (t27c has no `run`). Names come from the factory's comma lists, so the law module keeps no `main`. Traps: the lab's `/root/t27` t27b can predate #10455 and refuse `std.debug.print` that master accepts, so build a fresh t27b in its own worktree with its own `CARGO_TARGET_DIR` before you call a print unsupported. `t27c seal --save` needs zig on PATH (`/opt/zig`). A base64 line fetched back from fs-lab merges with the Railway warning, so wrap it as `B64:...:END`. A new `tri` arm must start its own line (`  name)`) or the documented-commands checker misses it |
+| Application: content factory (epic t27#10560) | `specs/t27f/reel_factory.t27` (t27#10561) | spec with tests: an item's code and title, read keyword by keyword, give 11 features. Those pick 1 of 12 scene archetypes (best pair first, cap 4, no repeat within 2 items, then the least-used generic scene) plus an accent, a motion, a layout and 8 output formats. R3 (t27#10571) draws it: `scene_raster`, `scene_lex`, `scene_bg` plus one `scene_<archetype>.t27` per archetype (code, graph, tests, trit, loop, branch, data, links, guard, title, task, map), each `<name>_px(t, acc, n, x, y)` over the lesson's own content on a 360 x 640 canvas, dispatched by `scene_still.pixel`; `still_gate.t27` renders the 27 course-0 stills (108 x 192 luma), scores all 351 pairs with a block SSIM and refuses above 850 permille, measured worst pair lessons 8 and 20 at 607. `lesson_reel` still draws token_floor (R4). SSIM on luma sees layout and contrast, not meaning. The floor modulo is `fmod` (t27b rejects `@mod`). Lessons: read the plan's spread over the whole course before trusting it. A greedy walk in course order gave 7 lessons one scene. Code counts alone handed lesson 8 the tests scene over "A test block". Gate: `tri factory`. The plan prints from a separate module, `specs/t27f/reel_factory_plan.t27` (t27#10573): `t27c gen` it, then run the zig (t27c has no `run`). Names come from the factory's comma lists, so the law module keeps no `main`. Traps: the lab's `/root/t27` t27b can predate #10455 and refuse `std.debug.print` that master accepts, so build a fresh t27b in its own worktree with its own `CARGO_TARGET_DIR` before you call a print unsupported. `t27c seal --save` needs zig on PATH (`/opt/zig`). A base64 line fetched back from fs-lab merges with the Railway warning, so wrap it as `B64:...:END`. A new `tri` arm must start its own line (`  name)`) or the documented-commands checker misses it |
 | Related | trinity#1647 dashboards, #1652 MVP research, #1653 three skills, #1655 evolution runtime | open |
 
 When asked "how is T27F going", report against the core rows first, then the other surfaces.
@@ -220,6 +220,22 @@ Traps from this tick (ffmpeg on the lab):
    `lit_len` that was red on `duplicate-bodies` until #10688. Reuse the existing body through
    `use`, and do not `--bless` a copy you made by accident.
 
+## Visual in every output (Claude Code and TRI CLAW)
+
+**The rule is `specs/t27mcp/visual_output.t27`** (its `RULE_CLAUDE_CODE` and `RULE_TRI_CLAW` lines
+are what each host reads). **Its particle-still layer is `specs/claw/visual_output.t27`.** This
+section is the order of steps; which answer carries which visual and how it reaches each host are
+the specs', not repeated here.
+
+1. Decide the answer's kind (`K_*` in the t27mcp spec). A one-sentence reply or a question back
+   goes without a visual.
+2. Spec, flow or numbers: draw from t27f tool rows (`t27f_outline`, `t27f_graph`, `t27f_view`),
+   labelled, with the legend and the source file, as `answer_verdict` checks.
+3. A report of a piece of work: a particle still (`takes_still`). Render the reel on the Railway lab
+   (never the Mac), take the frame at `STILL_MS` with `ffmpeg -ss 9 -frames:v 1`, and bring it into
+   the session folder (`out-reels/`, gitignored, never `git add`).
+4. Anything not made: say which and why in the answer. Never show an older file as this turn's.
+
 ## Application: topic map (gHashTag/trinity#1677)
 
 Use this part when the user gives a topic or a client brief, not a spec.
@@ -343,6 +359,43 @@ Before you change a uniqueness rule, measure what it can draw from:
   shell heredoc, such as a PR body that mentions tests. Write the body with the Write tool, then
   pass `--body-file`.
 
+### Preview the factory's stills as a video (t27#10571)
+
+The owner asks to see intermediate videos, not only numbers. Show one every time a renderer changes.
+
+1. **Write a lab-only printer.** It needs a `main` that loops `t` over `TOPICS`. For each lesson it
+   takes `arche`, `accent`, `motion`, `layout` and `content(t, a)` from `reel_factory`. It then
+   prints a plain PPM (`P3`, 360 x 640) of `scene_still.pixel(...)` through `scene_raster`'s
+   `red`, `green` and `blue`. Give it one trivial `test`.
+2. **Generate and build.** Run `t27c gen` on it, then `zig build-exe -lc -O ReleaseFast`.
+3. **Run it.** `./d 2> all.ppm`: `std.debug.print` writes to stderr. All 27 stills take 4 s and
+   56 MB.
+4. **Split and convert.** Split the dump on each `P3` line with awk. Convert each part to PNG with
+   ffmpeg, which reads P3.
+5. **Make the video and the sheet.**
+   - Video: `ffmpeg -framerate 1.25 -i s%02d.png` with
+     `-vf scale=720:1280:flags=neighbor,fps=30,format=yuv420p` and libx264. This gives 21.6 s.
+   - Contact sheet: `-vf scale=120:213,tile=9x3 -frames:v 1`.
+6. **Fetch them.** Bring both back wrapped as `B64:...:END`, and compare sha256 on both ends.
+   Put them in the session's notes folder, never in the repo or `out-reels/`.
+
+Measured at 355d44a39: each still has 9 to 14 flat colours, and the PNGs are 4 to 32 KB.
+
+**Traps:**
+
+- **A Mac session may not read images.** A hook can block image reads because the upstream
+  provider refuses them. Check the stills by numbers (colour count, file size, ffprobe) and open
+  the file for the owner in the file pane.
+- **WIP commits can sink a PR.** A WIP commit whose message names `#N` without a linking keyword
+  fails L1. `l1-traceability.yml` checks every non-merge commit, and the history cannot be
+  rewritten. Carry the work instead:
+  1. Make a new branch from master.
+  2. `git read-tree -m -u HEAD <merged-branch>`.
+  3. Make one commit with `Closes #N`, open a new PR, and close the old one with a pointer.
+- **Merge in the right direction.** Merging master into an old branch can trip the pre-commit
+  `foreign-budget` hook on master's own Rust lines (t27#10414). Merge the old branch into a
+  master-based branch instead. The result still fast-forwards the old branch.
+
 ## Check the whole corpus for import cycles (t27#10693)
 
 dependency-cruiser's `no-circular` and madge's `--circular` list every module on a cycle.

.trinity/seals/claw_ClawReelStill.json

@@ -0,0 +1,49 @@
+{
+  "built_by": "t27c-bootstrap@0.5.2+5e4d3b998",
+  "closure": [
+    {
+      "spec": "specs/claw/visual_output.t27",
+      "spec_hash": "sha256:17137afe136e39910f38d7b031c659a672e009bfeef1bf4f9b7af7e2cb6cc628"
+    },
+    {
+      "spec": "specs/t27f/frame_shard.t27",
+      "spec_hash": "sha256:1f04638a243b7a7f4d7a4480faf85f7878ca2e3365a2ec0f001a991fbd353da6"
+    },
+    {
+      "spec": "specs/t27f/reel_topics.t27",
+      "spec_hash": "sha256:7c1762cde96524791711594d23f880fbad1f497a499277710f1fd61d52d50157"
+    },
+    {
+      "spec": "specs/t27f/token_floor_scenes.t27",
+      "spec_hash": "sha256:948cff4bd34341b40b43c8a170e2a37e3bca59f8d6bc8e35d7e5ee43fe89a4ea"
+    },
+    {
+      "spec": "specs/t27mcp/service.t27",
+      "spec_hash": "sha256:3d7957837be8ac3de14b18ce1c0ecdde805f3f71d4d801b62d476b2e82f4a1ae"
+    }
+  ],
+  "config": "gen=c,rust,verilog,zig;tests=zig",
+  "gen_hash_c": "sha256:d32a87a4218806616b04b727d7e3f1bc76d6d33440f304f7beb42b566bb50437",
+  "gen_hash_rust": "sha256:5a1adebb39cdeb948aae1da51a64f43b93b1cd845f715389c30cf6785b701c30",
+  "gen_hash_verilog": "sha256:62df937cda4af6426ae5e1170bafa4cf124f5d952dea6b87ccf19e451968dc9f",
+  "gen_hash_zig": "sha256:b4e20621dcef2e6517948018e7f6aeb788da068df27beb9b6c2a485af15b492e",
+  "module": "ClawReelStill",
+  "ring": 12,
+  "seal_schema": 2,
+  "sealed_at": "2026-10-18T17:06:53Z",
+  "sealed_by": "t27c-bootstrap@0.5.2",
+  "spec_hash": "sha256:4fc5fc3c835193faae7b312194e4f31bc6baa8b7da3f08b12b809cb4e5e293e5",
+  "spec_path": "specs/claw/reel_still.t27",
+  "tests": {
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+    "failing": [],
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+    "zig": "0.16.0"
+  }
+}

.trinity/seals/claw_ClawVisualOutput.json

@@ -0,0 +1,37 @@
+{
+  "built_by": "t27c-bootstrap@0.5.2+9448ab4be",
+  "closure": [
+    {
+      "spec": "specs/t27f/reel_marketing.t27",
+      "spec_hash": "sha256:ab07f6476d900cc0e089ba1d851f0b610a77b778f00fd906d1b98a29281941c7"
+    },
+    {
+      "spec": "specs/t27mcp/visual_output.t27",
+      "spec_hash": "sha256:06c1c5e73142e2f79fa5d7be037eace63c1f20597a6e33274ebf8e1b428b7584"
+    }
+  ],
+  "config": "gen=c,rust,verilog,zig;tests=zig",
+  "gen_hash_c": "sha256:195d1b6aa754842316d3c8becc34ce6a0a90e5f7d4ddaebd490823103ed06c33",
+  "gen_hash_rust": "sha256:93ecd121c7efadf95e4ca54e1e750fb5c7a8159284cebe1cbb61d7065d1b7875",
+  "gen_hash_verilog": "sha256:794e86d5753efad530cd7732b2638ad3c3a5c4e6d8c9a851bd686663aa097282",
+  "gen_hash_zig": "sha256:d6204f6e99bc281a0163177b92ee4abf096ea32cb23cb3b817913d16c8d072b1",
+  "module": "ClawVisualOutput",
+  "ring": 12,
+  "seal_schema": 2,
+  "sealed_at": "2026-10-18T16:42:30Z",
+  "sealed_by": "t27c-bootstrap@0.5.2",
+  "spec_hash": "sha256:17137afe136e39910f38d7b031c659a672e009bfeef1bf4f9b7af7e2cb6cc628",
+  "spec_path": "specs/claw/visual_output.t27",
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+    "zig": "0.16.0"
+  }
+}

.trinity/seals/t27f_scene_bg.json

@@ -0,0 +1,33 @@
+{
+  "built_by": "t27c-bootstrap@0.5.2+9448ab4be",
+  "closure": [
+    {
+      "spec": "specs/t27f/scene_raster.t27",
+      "spec_hash": "sha256:7be7118d865aa65fd1ccb989ab160df2feb46c9ded0a15ca6510b747301ee4a6"
+    }
+  ],
+  "config": "gen=c,rust,verilog,zig;tests=zig",
+  "gen_hash_c": "sha256:af5c89e6bd6c81265d9d86c4f93eeb738ea91bfae40f294928bd586d5e98e7d0",
+  "gen_hash_rust": "sha256:b919e5036e999c0a6f329d928c954691083b2b139fe82ff160dabee993a6d1e8",
+  "gen_hash_verilog": "sha256:4470ad8b1d224134c143e03ce299f04c18dcfe61a47dfa036f9b7410f3568a6d",
+  "gen_hash_zig": "sha256:6b42744f7cacf6a9dd8efefee85de697a6a40137a0b4964285589c10e42f14c0",
+  "module": "scene_bg",
+  "ring": 12,
+  "seal_schema": 2,
+  "sealed_at": "2026-10-18T18:19:09Z",
+  "sealed_by": "t27c-bootstrap@0.5.2",
+  "spec_hash": "sha256:be66b1113d05d634b2bfb26a1b3d455e2a24b1fd5a4f98da28c9e821978be1cf",
+  "spec_path": "specs/t27f/scene_bg.t27",
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+    "zig": "0.16.0"
+  }
+}

.trinity/seals/t27f_scene_branch.json

@@ -0,0 +1,41 @@
+{
+  "built_by": "t27c-bootstrap@0.5.2+9448ab4be",
+  "closure": [
+    {
+      "spec": "specs/t27f/scene_bg.t27",
+      "spec_hash": "sha256:be66b1113d05d634b2bfb26a1b3d455e2a24b1fd5a4f98da28c9e821978be1cf"
+    },
+    {
+      "spec": "specs/t27f/scene_lex.t27",
+      "spec_hash": "sha256:a531db018ba0776b1d044fe39b323ba9f8c739fc60b06b57f6bab538022585c9"
+    },
+    {
+      "spec": "specs/t27f/scene_raster.t27",
+      "spec_hash": "sha256:7be7118d865aa65fd1ccb989ab160df2feb46c9ded0a15ca6510b747301ee4a6"
+    }
+  ],
+  "config": "gen=c,rust,verilog,zig;tests=zig",
+  "gen_hash_c": "sha256:07f5247c4f8578519a9d66081d2622a8350a7fbd467c4bc7c81d8e21c3c0100e",
+  "gen_hash_rust": "sha256:812a8d57ed2554ba33bb71e8f0194f5c65c7db268713b10823c61cbc6eae7261",
+  "gen_hash_verilog": "sha256:f4f5ef5ca03bb0f14c3e6279f8134fdd5c83f4c5c9632fc2c55382415eee8855",
+  "gen_hash_zig": "sha256:928740ee46a8f715527f4e4f4476abc9f95d323ab016878d8f7054f0961850a3",
+  "module": "scene_branch",
+  "ring": 12,
+  "seal_schema": 2,
+  "sealed_at": "2026-10-18T18:19:18Z",
+  "sealed_by": "t27c-bootstrap@0.5.2",
+  "spec_hash": "sha256:c4b584b8b5a4f5cc849dc9c1a4323609702adcdb710cb97b6441059210eccc15",
+  "spec_path": "specs/t27f/scene_branch.t27",
+  "tests": {
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+    "zig": "0.16.0"
+  }
+}

.trinity/seals/t27f_scene_code.json

@@ -0,0 +1,45 @@
+{
+  "built_by": "t27c-bootstrap@0.5.2+355d44a39",
+  "closure": [
+    {
+      "spec": "specs/t27f/reel_topics.t27",
+      "spec_hash": "sha256:7c1762cde96524791711594d23f880fbad1f497a499277710f1fd61d52d50157"
+    },
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+      "spec_hash": "sha256:be66b1113d05d634b2bfb26a1b3d455e2a24b1fd5a4f98da28c9e821978be1cf"
+    },
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+      "spec_hash": "sha256:a531db018ba0776b1d044fe39b323ba9f8c739fc60b06b57f6bab538022585c9"
+    },
+    {
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+      "spec_hash": "sha256:7be7118d865aa65fd1ccb989ab160df2feb46c9ded0a15ca6510b747301ee4a6"
+    }
+  ],
+  "config": "gen=c,rust,verilog,zig;tests=zig",
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+    "zig": "0.16.0"
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+}

.trinity/seals/t27f_scene_data.json

@@ -0,0 +1,41 @@
+{
+  "built_by": "t27c-bootstrap@0.5.2+9448ab4be",
+  "closure": [
+    {
+      "spec": "specs/t27f/scene_bg.t27",
+      "spec_hash": "sha256:be66b1113d05d634b2bfb26a1b3d455e2a24b1fd5a4f98da28c9e821978be1cf"
+    },
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+      "spec_hash": "sha256:a531db018ba0776b1d044fe39b323ba9f8c739fc60b06b57f6bab538022585c9"
+    },
+    {
+      "spec": "specs/t27f/scene_raster.t27",
+      "spec_hash": "sha256:7be7118d865aa65fd1ccb989ab160df2feb46c9ded0a15ca6510b747301ee4a6"
+    }
+  ],
+  "config": "gen=c,rust,verilog,zig;tests=zig",
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+  "gen_hash_rust": "sha256:f42475cad05b3992ff14f56c244a62e93569d442c823601e545b321b4592ce8b",
+  "gen_hash_verilog": "sha256:33650fcf0ac1cfc0c774466282467f6e6eb4c1ed0a39cf3cf5d671faac9fbf27",
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+  "sealed_by": "t27c-bootstrap@0.5.2",
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+  "spec_path": "specs/t27f/scene_data.t27",
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+    "zig": "0.16.0"
+  }
+}

.trinity/seals/t27f_scene_graph.json

@@ -0,0 +1,41 @@
+{
+  "built_by": "t27c-bootstrap@0.5.2+9448ab4be",
+  "closure": [
+    {
+      "spec": "specs/t27f/scene_bg.t27",
+      "spec_hash": "sha256:be66b1113d05d634b2bfb26a1b3d455e2a24b1fd5a4f98da28c9e821978be1cf"
+    },
+    {
+      "spec": "specs/t27f/scene_lex.t27",
+      "spec_hash": "sha256:a531db018ba0776b1d044fe39b323ba9f8c739fc60b06b57f6bab538022585c9"
+    },
+    {
+      "spec": "specs/t27f/scene_raster.t27",
+      "spec_hash": "sha256:7be7118d865aa65fd1ccb989ab160df2feb46c9ded0a15ca6510b747301ee4a6"
+    }
+  ],
+  "config": "gen=c,rust,verilog,zig;tests=zig",
+  "gen_hash_c": "sha256:970e740bc66feb58d25d6a6c00dbbb68f04591d579ff9653927ebe360fc5ddc5",
+  "gen_hash_rust": "sha256:df9e11ebaa9016d09dd8de06397d531fe0825509137183537e3afe922115ee4c",
+  "gen_hash_verilog": "sha256:5cae54c058c0dfc82c481516fee95ff46f84c92adef1c254ea3fbbeae244a948",
+  "gen_hash_zig": "sha256:19b0aec74782b50d6ea48603e4ce51e3317f44a5ae4cbcde63cb48ffd9965767",
+  "module": "scene_graph",
+  "ring": 12,
+  "seal_schema": 2,
+  "sealed_at": "2026-10-18T18:19:12Z",
+  "sealed_by": "t27c-bootstrap@0.5.2",
+  "spec_hash": "sha256:ae37d6259842a3b6854548adff272260a35a8c7652c509f952ed1908b94d5706",
+  "spec_path": "specs/t27f/scene_graph.t27",
+  "tests": {
+    "failed": 0,
+    "failing": [],
+    "forced": false,
+    "passed": 4,
+    "total": 4,
+    "vacuous": 0
+  },
+  "toolchain": {
+    "test_runner": "sha256:8512b80da533b79289110fca4a65f3336abd7a059ca4b72ea595d5e33ff8ad10",
+    "zig": "0.16.0"
+  }
+}