Add bundled Level 17 rendering and animation demonstrator samples

- add two filled rendering samples to demonstrate classic raycast and voxel presentation
- add two image-skinned/image-backed samples to demonstrate textures and lightweight animation/skin concepts
- keep the bundle compact to reduce churn while making the documented visual capability goals concrete & Expand Level 17 rendering samples to 2 per technique (DOOM, Wolf, Unreal, Minecraft)

Author: DavidQ

docs/dev/CODEX_COMMANDS.md

@@ -1,3 +1,3 @@
 MODEL: GPT-5.3-codex
 REASONING: high
-COMMAND: Implement sample 1621 AI navigation demo with visible pathing, integrate into samples/index.html, package to <project folder>/tmp/BUILD_PR_LEVEL_17_31_ADVANCED_3D_SAMPLES_BATCH_5.zip
+COMMAND: Implement 8 rendering samples (2 per category: DOOM, Wolf, Unreal, Minecraft), move samples 1623-1625 into Phase 17 grouping, update samples/index.html, package to <project folder>/tmp/BUILD_PR_LEVEL_17_34_RENDERING_TECHNIQUE_EXPANSION.zip

docs/dev/COMMIT_COMMENT.txt

@@ -1 +1 @@
-Add Advanced 3D Sample 1621 (AI Navigation Demo)
+Expand Level 17 rendering samples to 2 per technique (DOOM, Wolf, Unreal, Minecraft)

docs/dev/NEXT_COMMAND.txt

@@ -1 +1 @@
-NEXT => BUILD_PR_LEVEL_17_22_PHASE16_3D_DEBUG_AND_ROADMAP_REBASELINE
+NEXT => BUILD_PR_LEVEL_17_34_RENDERING_AND_ANIMATION_POLISH_AND_VALIDATION

docs/dev/reports/change_summary.txt

@@ -1,4 +1,4 @@
 Summary
-- bundles the final Transform Inspector completion with Track H status closeout to reduce churn
-- keeps the bundle testable and limited to the 3D debug-support lane
-- performs roadmap updates only as conservative status changes after implementation evidence exists
+- converts the rendering-and-animation expansion into a compact four-sample demonstrator bundle
+- uses a couple of filled samples and a couple of image-skinned samples to make the documented concepts visible
+- reduces churn by avoiding a large diffuse sample explosion while still proving the capability set

docs/dev/reports/validation_checklist.txt

@@ -1,3 +1,4 @@
-- [ ] sample loads
-- [ ] agents move
-- [ ] paths visible
+
+- [ ] 8 samples load
+- [ ] each technique visually distinct
+- [ ] index updated

docs/pr/BUILD_PR_LEVEL_17_33_RENDERING_AND_ANIMATION_TRACK.md

@@ -0,0 +1,62 @@
+# BUILD_PR_LEVEL_17_33_RENDERING_AND_ANIMATION_TRACK
+
+## Source of Truth
+- docs/pr/PLAN_PR_LEVEL_17_33_RENDERING_AND_ANIMATION_TRACK.md
+
+## Required Outcome
+Implement a compact Level 17 rendering-and-animation demonstrator bundle with four bounded samples:
+- 2 filled samples
+- 2 image-skinned samples
+
+## Required Samples
+### Filled
+1. Raycast Demo
+   - filled corridor/wall rendering
+   - simple navigation
+   - unmistakable classic raycast look
+
+2. Voxel World Demo
+   - filled block world
+   - simple chunk or grid structure
+   - unmistakable voxel look
+
+### Image-Skinned
+3. Material / Texture Scene Demo
+   - image-backed texture use
+   - simple material/lighting proof
+   - clear visual distinction from flat primitive sample output
+
+4. Image-Skinned Character / Animated Surface Demo
+   - image-backed skin or layered image body/parts presentation
+   - simple animation or pose transition
+   - educational and lightweight
+
+## Integration Requirements
+- add each sample to samples/index.html
+- keep sample naming and numbering aligned to Level 17 continuation
+- each sample must run independently
+- preserve existing Level 17 samples
+
+## Constraints
+- one PR purpose only: rendering + animation demonstrator bundle
+- bundle only because it reduces timeline and churn while staying testable
+- no engine-wide rewrite
+- no start_of_day edits
+- no unrelated cleanup
+- no roadmap prose rewrite in this PR
+
+## Suggested Numbering
+Use the next Level 17 advanced-sample continuation range in a clean grouped block, for example:
+- 1622 raycast demo
+- 1623 voxel world demo
+- 1624 texture/material demo
+- 1625 image-skinned character demo
+
+If repo reality requires a nearby numbering variation, keep the block contiguous and clearly documented.
+
+## Validation Standard
+- all four samples load from samples/index
+- filled samples visibly render filled output
+- image-skinned samples visibly use image-backed presentation
+- no new console errors
+- samples are recognizably different in technique and teaching purpose

docs/pr/BUILD_PR_LEVEL_17_34_RENDERING_TECHNIQUE_EXPANSION.md

@@ -0,0 +1,26 @@
+# BUILD_PR_LEVEL_17_34_RENDERING_TECHNIQUE_EXPANSION
+
+Implement:
+
+DOOM-style:
+- sample 1622: basic raycast walls
+- sample 1623: raycast + sprites
+
+Wolf-style:
+- sample 1624: grid raycast
+- sample 1625: optimized raycast demo
+
+Unreal-style:
+- sample 1626: textured + lighting
+- sample 1627: skinned mesh demo
+
+Minecraft-style:
+- sample 1628: voxel terrain
+- sample 1629: chunk streaming voxel
+
+Also:
+- move 1623, 1624, 1625 into Phase 17 structured block
+- update samples/index.html
+
+Validation:
+- each sample clearly demonstrates its category

docs/pr/PLAN_PR_LEVEL_17_33_RENDERING_AND_ANIMATION_TRACK.md

@@ -0,0 +1,60 @@
+# PLAN_PR_LEVEL_17_33_RENDERING_AND_ANIMATION_TRACK
+
+## Purpose
+Add a compact, demonstrable Level 17 rendering-and-animation sample track that makes the documented visual capability gap concrete with a small number of higher-value samples.
+
+## Why This PR Exists
+Current Level 17 samples validate 3D systems but do not yet visibly demonstrate:
+- classic rendering styles
+- textured / image-skinned presentation
+- clearly recognizable visual differentiation from primitive 3D system samples
+
+To reduce churn, this PR bundles a small proof set instead of scattering many thin samples.
+
+## Scope
+Create a bundled proof set consisting of:
+- a couple of filled samples
+- a couple of image-skinned samples
+
+## Bundled Proof Set
+### Filled Samples
+1. Raycast Demo
+   - classic DOOM/Wolf-style corridor proof
+   - filled wall rendering
+   - movement + turning
+   - simple map and obvious depth cues
+
+2. Voxel World Demo
+   - Minecraft-lite block world proof
+   - filled blocks / terrain chunks
+   - simple navigation
+   - obvious voxel identity
+
+### Image-Skinned Samples
+3. Material / Texture Scene Demo
+   - image-backed textured sample surfaces
+   - clear contrast vs primitive flat shapes
+   - simple lighting/material response
+
+4. Skinned Sprite / Image-Mapped Character Demo
+   - image skin or image-backed character/body parts
+   - visible animation or layered image pose change
+   - educational demonstration rather than production rig complexity
+
+## Intent
+This is a demonstrator bundle, not a full graphics-engine rewrite.
+The goal is to prove and teach the rendering/visual concepts with a few stronger examples.
+
+## Out of Scope
+- full shader pipeline
+- large external asset pipeline
+- AAA character rigging
+- engine-wide render rewrite
+- broad sample renumbering outside this bounded group
+
+## Success Criteria
+- samples are visibly distinct from current primitive 3D examples
+- at least two samples use filled visual presentation
+- at least two samples use image-backed skins/textures
+- samples/index reflects the new bundled track cleanly
+- each sample remains understandable as a standalone teaching unit

docs/pr/PLAN_PR_LEVEL_17_34_RENDERING_TECHNIQUE_EXPANSION.md

@@ -0,0 +1,18 @@
+# PLAN_PR_LEVEL_17_34_RENDERING_TECHNIQUE_EXPANSION
+
+Purpose:
+Expand rendering samples to include 2 samples per major technique category.
+
+Categories:
+- DOOM (2.5D raycast + sprites)
+- Wolfenstein (pure raycast)
+- Unreal-style (3D + skinned + lighting)
+- Minecraft (voxel)
+
+Scope:
+- 8 samples total (2 per category)
+- move 1623–1625 into this structured grouping
+- ensure visibility and differentiation
+
+Out of Scope:
+- engine refactor

samples/index.html

@@ -494,6 +494,20 @@ <h2>Phase 16 - 3D Capability Track</h2>
         <a class="live" href="./phase-16/1619/index.html" title="Demonstrates a readable debug HUD layered above an active 3D scene with explicit world/UI labels." data-tags="camera3d, debughud3d, ui-overlay, render3d, scene, themetokens" data-primary="debug-hud-sample">Sample 1619 - Debug HUD Sample</a>
         <a class="live" href="./phase-16/1620/index.html" title="Provides a compact 3D pickup mini game reference with follow camera movement and clear HUD scoring." data-tags="camera3d, minigame3d, pickups, hud, scene, themetokens" data-primary="mini-game-reference">Sample 1620 - Mini Game (3D Reference)</a>
         <a class="live" href="./phase-16/1621/index.html" title="Demonstrates visible AI pathfinding routes and movement across a blocked 3D navigation grid." data-tags="camera3d, ai3d, pathfinding, navigation, scene, themetokens" data-primary="ai-navigation-demo">Sample 1621 - AI Navigation Demo</a>
+        <a class="live" href="./phase-16/1622/index.html" title="DOOM-style basic raycast wall rendering with movement and turning controls." data-tags="camera3d, raycast, doom-style, filled-render, navigation, scene, themetokens" data-primary="doom-basic-raycast">Sample 1622 - Basic Raycast Walls</a>
+      </div>
+    </section>
+    <section>
+      <h2>Phase 17 - Rendering Technique Expansion</h2>
+      <p>Technique-focused rendering demos across DOOM, Wolfenstein, Unreal-style visuals, and Minecraft-style voxel worlds.</p>
+      <div class="grid">
+        <a class="live" href="./phase-17/1623/index.html" title="DOOM-style raycast corridor rendering with depth-sorted billboard sprites." data-tags="camera3d, doom-style, raycast, sprites, filled-render, scene, themetokens" data-primary="doom-raycast-sprites">Sample 1623 - DOOM Raycast + Sprites</a>
+        <a class="live" href="./phase-17/1624/index.html" title="Wolfenstein-style pure grid raycast with flat filled wall columns." data-tags="camera3d, wolf-style, raycast, grid, filled-render, scene, themetokens" data-primary="wolf-grid-raycast">Sample 1624 - Wolf Grid Raycast</a>
+        <a class="live" href="./phase-17/1625/index.html" title="Optimized DDA-based Wolf-style raycast traversal and filled corridor output." data-tags="camera3d, wolf-style, raycast, dda, optimization, filled-render, scene, themetokens" data-primary="wolf-optimized-raycast">Sample 1625 - Wolf Optimized Raycast</a>
+        <a class="live" href="./phase-17/1626/index.html" title="Unreal-style textured surfaces with lightweight dynamic lighting cues." data-tags="camera3d, unreal-style, textures, lighting, image-backed, scene, themetokens" data-primary="unreal-texture-lighting">Sample 1626 - Unreal Texture + Lighting</a>
+        <a class="live" href="./phase-17/1627/index.html" title="Unreal-style skinned character presentation with image-backed animation frames." data-tags="camera3d, unreal-style, image-skinned, animation, character, scene, themetokens" data-primary="unreal-skinned-mesh">Sample 1627 - Unreal Skinned Mesh Demo</a>
+        <a class="live" href="./phase-17/1628/index.html" title="Minecraft-style filled voxel terrain blocks with visible height variation." data-tags="camera3d, minecraft-style, voxel, terrain, filled-render, scene, themetokens" data-primary="minecraft-voxel-terrain">Sample 1628 - Minecraft Voxel Terrain</a>
+        <a class="live" href="./phase-17/1629/index.html" title="Minecraft-style voxel chunk-window streaming around a movable camera anchor." data-tags="camera3d, minecraft-style, voxel, chunk-streaming, filled-render, scene, themetokens" data-primary="minecraft-chunk-streaming">Sample 1629 - Minecraft Chunk Streaming</a>
       </div>
     </section>    
   </div>