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feat: UX behavioral foundations + ux-audit command (v0.17.0.0) (#1000)

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* feat: UX behavioral foundations — Krug's usability principles as shared design infrastructure

Add UX_PRINCIPLES resolver distilling Steve Krug's "Don't Make Me Think" into
actionable guidance for AI agents. Injected into all 4 design skills as a shared
behavioral foundation complementing the existing visual checklist (WHAT to check)
and cognitive patterns (HOW designers see) with HOW USERS ACTUALLY BEHAVE.

Methodology rewire: 6 Krug usability tests woven into existing design-review
phases — Trunk Test, 3-Second Scan, Page Area Test, Happy Talk Detection with
word count metric, Mindless Choice Audit, Goodwill Reservoir tracking with
visual dashboard. First-person narration mode for design-review output with
anti-slop guardrail.

Hard rules: 4 Krug always/never rules in DESIGN_HARD_RULES (placeholder-as-label,
floating headings, visited link distinction, minimum type size). Krug, Redish,
Jarrett added to plan-design-review references.

Token ceiling: gen-skill-docs.ts warns if any SKILL.md exceeds 100KB (~25K tokens).
Documented in CLAUDE.md.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

* feat: $B ux-audit command + snapshot --heatmap flag

New browse meta-command: ux-audit extracts page structure (site ID, navigation,
headings, interactive elements, text blocks) as structured JSON for agent-side
UX behavioral analysis. Pure data extraction — the agent applies the 6 usability
tests and makes judgment calls. Element caps: 50 headings, 100 links, 200
interactive, 50 text blocks.

New snapshot flag: -H/--heatmap accepts a JSON color map mapping ref IDs to
colors (green/yellow/red/blue/orange/gray). Extends existing snapshot -a
annotation system with per-ref colors instead of hardcoded red. Color whitelist
validation prevents CSS injection. Composable — any skill can use it.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

* docs: update project documentation for v0.17.0.0

ARCHITECTURE.md: added {{UX_PRINCIPLES}} resolver to placeholder table.
VERSION: bumped to 0.17.0.0 for UX behavioral foundations release.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

* chore: bump version and changelog (v0.17.0.0)

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

* fix: adversarial review fixes for ux-audit and heatmap

Security:
- Remove live form value extraction from ux-audit (leaked input field values)
- Add ux-audit to PAGE_CONTENT_COMMANDS (untrusted content wrapping)

Correctness:
- Scope youAreHere selector to nav containers (was matching animation classes)
- Validate heatmap JSON is a plain object (string/array/null produced garbage)
- Use textContent instead of innerText for word count (avoids layout computation)
- Remove dead url variable and unused LINK_CAP constant

Found by Codex + Claude adversarial review.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

---------

Co-authored-by: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
This commit is contained in:
Garry Tan
2026-04-14 07:47:11 -10:00
committed by GitHub
co-authored by Claude Opus 4.6
parent 7e96fe299b
commit 2300067267
21 changed files with 836 additions and 6 deletions
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SKILL.md
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@@ -719,6 +719,7 @@ The snapshot is your primary tool for understanding and interacting with pages.
-a --annotate Annotated screenshot with red overlay boxes and ref labels
-o <path> --output Output path for annotated screenshot (default: <temp>/browse-annotated.png)
-C --cursor-interactive Cursor-interactive elements (@c refs — divs with pointer, onclick). Auto-enabled when -i is used.
-H <json> --heatmap Color-coded overlay screenshot from JSON map: '{"@e1":"green","@e3":"red"}'. Valid colors: green, yellow, red, blue, orange, gray.
```
All flags can be combined freely. `-o` only applies when `-a` is also used.
@@ -825,6 +826,7 @@ Refs are invalidated on navigation — run `snapshot` again after `goto`.
| `network [--clear]` | Network requests |
| `perf` | Page load timings |
| `storage [set k v]` | Read all localStorage + sessionStorage as JSON, or set <key> <value> to write localStorage |
| `ux-audit` | Extract page structure for UX behavioral analysis — site ID, nav, headings, text blocks, interactive elements. Returns JSON for agent interpretation. |
### Visual
| Command | Description |