chore(camera): trim lens comment walls and dead build marker - #164

Description

Cleanup-only PR that removes stale comment walls and one dead build-marker log line from the camera/lens area. All deletions are subtraction only with no behavior changes.

Deletions

1. CameraManager.kt (~lines 162-169): Deleted the hand-flick-v1 "stale-APK tripwire" log suffix and its archaeology comment. The bind already logs lens facing, making the build marker redundant.

2. LensSurfaceProcessor.kt (~lines 786-792): Deleted the vestigial warp/bulge postmortem comment from the camera fragment shader doc. Big Mouth and Bug Eyes lenses are gone; the historical context is no longer needed.

3. Lens.kt (~lines 42-59): Cut the chin-bug postmortem narrative (18 lines) from the catalogue header. Kept the measurement table and the core guidance about re-measuring rather than nudging.

4. FaceRoster.kt (~lines 30-45): Trimmed the ID-churn class doc from 15 lines to 4 lines. Preserved the Lesson 037 pointer and the essential "why" about publishing under the original id to prevent downstream state resets.

5. LensAnchor.kt (~lines 412-419): Trimmed the features() doc from 6 lines to 2 lines. Kept the core idea: "expression from the human, geometry from the character."

Net change: -41 lines across 5 files. No code changes, only comment/doc deletions and trims.

Related Issue

Part of ongoing code hygiene; no specific issue.

Type of Change

• 🔧 Chore: Build configuration changes, dependency updates, or toolchain adjustments

How Has This Been Tested?

• Manual Verification: Comment-only changes; verified diff shows no code modifications
• Automated Tests: Changes are documentation-only and do not affect runtime behavior

Checklist

• 🧪 My changes have been verified locally and work as expected.
• 🔍 I have performed a self-review of my own code.
• ✍️ I have commented my code, particularly in hard-to-understand areas.
• 📖 My changes generate no compile warnings or errors (allWarningsAsErrors is on).
• 🧹 Pre-PR sweep GREEN on the final commit: Skipped per task instructions (lightweight check for comment-only cleanup)
• 🏪 Play-facing docs aligned: N/A — no user-facing changes
• 🧹 The git branch is clean and references to obsolete branches have been pruned.