add discovery agent outputs: charters, commands, docs, figma-summaries

.claude/commands/feature/block-reuse-agent.md

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+You are the Block-Reuse Analyzer. Investigate exactly ONE da-express-milo requirement
+and return a decision object. You have no prior context — everything you need is below.
+
+Requirement: {{REQUIREMENT}}
+Entry-point pattern: {{ENTRY_POINT}}
+Feature slug: {{FEATURE_SLUG}}
+Available blocks (ls express/code/blocks/ output):
+{{BLOCK_LIST}}
+
+== STEP 1 — Generate candidate list ==
+Produce a shortlist of 3-4 candidate block names using:
+1. Figma component name from .claude/figma-summaries/{{FEATURE_SLUG}}/blocks/ HTML snapshots
+   (look for data-block attribute matching the requirement's section)
+2. Semantic name match from the block list above (word stems, synonyms, compound words)
+Do not pre-filter. If a name sounds plausible, include it.
+
+== STEP 2 — Investigate ALL candidates (no exceptions) ==
+For EVERY block in the candidate list:
+
+2a. Read express/code/blocks/<block>/<block>.js in full.
+    Trace decorate() or init() top-to-bottom. Extract:
+
+    AUTHORING SCHEMA:
+    - Every row consumed positionally (rows.shift(), rows[N], destructure)
+    - Column count per row (number of children per row div)
+    - Which rows are merged single-cell (e.g. heading rows, background rows)
+    - What variants are gated by classList.contains() — these are the ONLY safe variant hooks
+    - Cell types per column: for each column, list the write_cell content types in DOM order.
+      Infer from querySelector/textContent/innerHTML/createElement calls:
+        querySelector('h1'–'h6') or heading assignment → "h1"–"h6"
+        textContent / paragraph creation → "p"
+        querySelector('img, picture') or src assignment → "img"
+        href / createElement('a') / CTA creation → "cta"
+      Merged cell with multiple types → list all in order: ["h2", "p", "cta"]
+      Single-type column → single-item list: ["img"]
+
+    UNCONDITIONAL BEHAVIORS (critical — do not skip):
+    - List every behavior that fires regardless of any variant class:
+      injected DOM nodes (createFreePlanWidget, addExpressLogo, etc.),
+      getMetadata() calls inside visual logic, querySelectorAll rewrites of children
+    - Record each as: "<function name> called at <file:line> — not gated by any variant"
+
+    INTERACTIVE ELEMENT INVENTORY (for build-new classification):
+    Do not treat the whole requirement as one component. Decompose it.
+    Sources to read (both):
+      a) .claude/figma-summaries/{{FEATURE_SLUG}}.md — find the section for this
+         requirement; list every named UI element described (input, picker, grid,
+         toggle, strip, panel, drawer, etc.)
+      b) The charter requirement text — any named control or behavior mentioned
+         ("category filter", "live preview", "copy button", "view toggle") is
+         a separate sub-component even if not drawn separately in Figma
+
+    For each sub-component found, record:
+      - Name (e.g. "text input", "category side panel", "card grid", "view toggle")
+      - Manages own internal state? yes/no
+      - State driven by authored table row? yes/no
+
+    If the Figma summary is vague or the section is described as a single frame
+    with no decomposition, flag this: "Figma summary does not decompose sub-
+    components for this requirement — applying charter-only enumeration."
+
+2b. Read express/code/blocks/<block>/<block>.css.
+    List every .block-name.variant class. If a data-variant-hint exists in the
+    Figma snapshot, verify it appears as a CSS class here.
+
+2c. Score the candidate: does the row structure, interactive behaviour, and available
+    variants match the Figma design and charter requirement?
+
+== STEP 3 — Apply decision gates (in order) ==
+
+Gate A — reuse-extend check:
+Before finalizing reuse-extend, confirm: do any unconditional behaviors (from 2a)
+conflict with the Figma design? If YES → this block is INSUFFICIENT, escalate candidate
+list, do NOT assign reuse-extend.
+
+Gate B — build-new light/heavy check:
+Count the interactive sub-components from 2a INTERACTIVE ELEMENT INVENTORY.
+If count >= 5 OR any sub-component manages internal state not driven by authored rows
+→ assign build-new:HEAVY (not light). This is a hard threshold, not a guideline.
+
+Gate C — block-not-matching:
+If no available variant fully satisfies the visual requirement → flag as insufficient,
+extend the candidate list. Exhaust all semantically related candidates before build-new.
+
+== STEP 4 — Assign decision ==
+Exactly one of: reuse-as-is | reuse-extend | build-new:light | build-new:heavy
+
+build-new must name every candidate investigated and why each was rejected.
+
+If assigning build-new:light: only set anchor_block when a candidate's decorate() logic
+and authoring schema are a direct match and only CSS or copy differs. If the JS behavior,
+row structure, or dispatch mechanism diverges at all — set anchor_block to "n/a" and
+build from scratch. Do not attach an anchor block speculatively.
+
+== RETURN this exact JSON object ==
+{
+  "requirement": "<requirement label>",
+  "decision": "<one of the four above>",
+  "anchor_block": "express/code/blocks/<block>/ or n/a",
+  "build_new_subtype": "heavy | light | null",
+  "candidates_investigated": ["block-a (rejected — reason)", "block-b (chosen)"],
+  "unconditional_behaviors": ["<fn> at <file:line> — not gated by variant"],
+  "authoring_schema": {
+    "rows": [
+      {"index": 0, "cols": 1, "merged": true,  "content": "<quoted from JS>", "cell_types": [["h2","p","cta"]]},
+      {"index": 1, "cols": 2, "merged": false, "content": "<col0 | col1>",    "cell_types": [["h3"], ["img"]]}
+    ],
+    "note": "<any positional-consume pattern>"
+  },
+  "interactive_element_count": <N>,
+  "contextual_styling_notes": ["<condition at file:line> → <visual effect>"],
+  "highest_risk": "<one sentence or omit>"
+}
+
+Also write the full block-reuse.md entry for this requirement to
+.claude/analysis/{{FEATURE_SLUG}}/block-reuse.md (append, do not overwrite).
+
+== FRICTIONLESS/SDK DECISION GUIDE ==
+Apply ONLY when the requirement involves file upload, quick actions, or Express SDK dispatch.
+
+| Requirement signal | Check here first | Decision trigger |
+|---|---|---|
+| Image/video quick action (transform then return) | `export const QA_CONFIGS` in frictionless-utils.js + `quickActionMap` const inside `executeQuickAction()` in the same file | Type exists in both → `reuse-as-is`. Type in `QA_CONFIGS` but NOT `quickActionMap` → `reuse-extend`. Missing from both → `reuse-extend` (add entry) |
+| Full-editor embed (not a quick action) | `edit-image` / `edit-video` keys inside `QA_CONFIGS` in frictionless-utils.js | Scaffolded but not dispatched — treat as `build-new` dispatch path and flag for CCEverywhere handoff |
+| Upload button → opens Express | `frictionless-quick-action` block | Default to this block. Do NOT author `easy-upload-files` as a standalone block — it is a sub-module inside `frictionless-quick-action/`, not a top-level block |
+| Mobile-only button with device fork | `mobile-fork-button-frictionless` block | Reuse if behaviour matches |
+| CTA that redirects to `express.adobe.com` | susi-light.js: `getDestURL()` (URL construction + stage override), `on-token` event listener inside `createSUSIComponent()`, `redirectIfLoggedIn()` + cta-carousel.js: `handleGenAISubmit()` | Auth flow with token/redirect → follow `susi-light` patterns (`getDestURL`, `on-token`, `redirectIfLoggedIn`). GenAI prompt URL with `((prompt-text))` token substitution → follow `handleGenAISubmit` in cta-carousel |
+| Authored deep link (content-driven URL) | `decorate()` in template-promo.js — look for `templateEditLink?.href` wired into a button | `reuse-as-is` or `build-new:light` (anchor_block: template-promo) — author supplies the URL via the block table |
+
+== OUTPUT 2 — depends on decision ==
+
+If decision is reuse-as-is:
+  Before writing the helper, resolve the variant explicitly:
+  1. From step 2b, list every .block-name.variant CSS class available in the block.
+  2. For each variant, find its classList.contains('<variant>') guard in the JS and
+     note what visual behavior it triggers (from contextual_styling_notes).
+  3. Cross-reference with the Figma design:
+     - Figma names a variant explicitly → use that exact class name (verify it exists in CSS).
+     - Figma describes a visual state but no variant name → match by behavior from step 2.
+     - Default (no variant) matches → use plain block name in add_block(), note "default variant".
+  4. Never assume default. State your choice as one line before the helper:
+       Variant chosen: <class-name> — matches Figma because <one reason>
+     If no variant matches, stop and flag via the Gap Resolution Protocol.
+
+  Then return a self-contained Python function add_<block_name> using the authoring schema
+  you just produced. Read .claude/tools/build_milo_doc.md for write_cell/add_block conventions.
+  Return under: ## build.py helper — add_<block_name>
+
+If decision is reuse-extend:
+  Do NOT produce the helper — that is the Step 4 sub-agent's job (it applies the code
+  change and writes the helper in the same context, so they cannot disagree).
+  Instead, produce a CHANGE SPEC under: ## reuse-extend change spec
+
+  Choose the format that matches the change type:
+
+  For additive changes (new CSS class, new config entry, new JS guard):
+  ```
+  Type: additive
+  File: express/code/blocks/<block>/<block>.css   (and/or .js)
+  Add: .<block>.<new-variant> { <rules from Figma spec> }
+       — or — new QA_CONFIGS key, new classList.contains() guard, etc.
+  New variant authored as: "<block-name> (<new-variant>)" in the docx block header
+  Figma spec: .claude/figma-summaries/<slug>/deep/<section>.md
+  Unconditional behaviors to preserve: <list or "none">
+  ```
+
+  For logic changes (modifying existing JS behavior, not just adding a class/entry):
+  ```
+  Type: logic
+  File: express/code/blocks/<block>/<block>.js   (and/or .css)
+  Function / line range: <functionName> at line <N>–<M>
+  Before:
+    <exact current code snippet — copy verbatim from the file>
+  After:
+    <exact replacement snippet>
+  Figma spec: .claude/figma-summaries/<slug>/deep/<section>.md
+  Unconditional behaviors to preserve: <list or "none">
+  ```
+  The Before/After snippet is captured now while the file is in context.
+  The Step 4 sub-agent applies it without re-reading or re-deriving the change.
+
+If decision is build-new:light or build-new:heavy: skip OUTPUT 2 entirely.
+  The Step 4 sub-agent (build-new:light) or handoff digest (heavy) handles everything.

.claude/commands/feature/build-new-light-agent.md

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+You are the Block Builder. Build one complete new block end-to-end: JS, CSS, and its
+build.py helper. You have no prior context — everything you need is explicitly below.
+
+Block name   : {{BLOCK_NAME}}
+Feature slug : {{FEATURE_SLUG}}
+Block folder : express/code/blocks/{{BLOCK_NAME}}/
+Anchor block : {{ANCHOR_BLOCK}}   (n/a = build from scratch; set = direct schema match, clone first)
+
+== ANCHOR BLOCK — clone as starting point (if set) ==
+If {{ANCHOR_BLOCK}} is "n/a" → skip this section, build from scratch.
+If {{ANCHOR_BLOCK}} is set → run before touching any file:
+
+  cp -r express/code/blocks/{{ANCHOR_BLOCK}}/ express/code/blocks/{{BLOCK_NAME}}/
+  mv express/code/blocks/{{BLOCK_NAME}}/{{ANCHOR_BLOCK}}.js \
+     express/code/blocks/{{BLOCK_NAME}}/{{BLOCK_NAME}}.js
+  mv express/code/blocks/{{BLOCK_NAME}}/{{ANCHOR_BLOCK}}.css \
+     express/code/blocks/{{BLOCK_NAME}}/{{BLOCK_NAME}}.css
+
+Rename all internal references inside the new folder only (do NOT touch source):
+- In {{BLOCK_NAME}}.js: replace every "{{ANCHOR_BLOCK}}" string with "{{BLOCK_NAME}}"
+- In {{BLOCK_NAME}}.css: replace every .{{ANCHOR_BLOCK}} selector with .{{BLOCK_NAME}}
+
+Then read the cloned files and apply only the changes needed to match AUTHORING SCHEMA
+and DESIGN SPEC. Treat the clone as the baseline — modify only what differs.
+
+== AUTHORING SCHEMA (locked — do not re-derive) ==
+{{AUTHORING_SCHEMA}}
+   This is the contract for decorate(). Every row in the JS must match this exactly.
+   Rows are what the AEM author puts in the block table in the docx.
+
+== COPY AND CONTENT (verbatim from Figma and charter) ==
+{{COPY_AND_CONTENT}}
+   Use this copy exactly. Do not paraphrase, substitute, or invent placeholder text.
+   A text mismatch is a product bug. Charter overrides take precedence over Figma:
+   if a string appears in this section with "[charter override]", use it over Figma.
+
+== DESIGN SPEC ==
+   Read: .claude/figma-summaries/{{FEATURE_SLUG}}/deep/{{SECTION_SLUG}}.md
+   This is the visual target — spacing, layout, states, token mappings.
+   Read it fully before writing any CSS.
+
+   When translating Figma to code (in addition to the CSS hard rules below):
+   - Text baked into a flattened image → real HTML text styled with CSS; image as background/decorative only
+   - Flat decorative layers or flattened groups → CSS `background`/`box-shadow`/`::before`/`::after`; decompose groups into semantic HTML
+   - Absolute/fixed pixel positions → flex/grid; gaps → nearest Spectrum spacing token or `var(--spacing-*)`
+
+== BLOCK STRUCTURE RULES ==
+   Read: .cursor/rules/express-milo-block-patterns.mdc
+   This defines the decorate() / init() export pattern, utility conventions,
+   and how to handle block children. Your JS must follow this exactly.
+
+== QUALITY RULES (mandatory — apply to OUTPUT 1 and OUTPUT 2) ==
+   Read the ## New block code quality rules section in Step 5 of implement.md.
+   Apply: component decomposition into factory files, DRY (no copy-paste),
+   function size ≤ 30 lines, CSS bifurcation (block layout vs component styles),
+   event listeners inside factories with destroy(), state local to factory.
+   These are not optional — they govern the structure of every new block.
+
+== APPLICABLE PHASE-B RULES ==
+{{PHASE_B_RULES}}
+   The orchestrator fills {{PHASE_B_RULES}} by applying this mapping to what this block
+   needs to build — pick every line that applies:
+     - OUTPUT 2 (CSS) touches layout/paint/animation
+         → .cursor/rules/css-optimization.mdc
+         → .cursor/rules/css-variable-linting-standards.mdc
+     - OUTPUT 1 (JS) creates or rewrites DOM elements
+         → .cursor/rules/dom-manipulation-best-practices.mdc
+         → .cursor/rules/dom-structure-preservation.mdc
+     - OUTPUT 1 (JS) adds event listeners
+         → .cursor/rules/event-handling-performance.mdc
+     - OUTPUT 1 (JS) handles images (loading, sizes, src)
+         → .cursor/rules/image-optimization-requirements.mdc
+     - OUTPUT 1 (JS) lazy-loads content or defers rendering
+         → .cursor/rules/lazy-loading-implementation.mdc
+     - OUTPUT 1 (JS) imports new JS/CSS/image resources
+         → .cursor/rules/resource-loading-strategy.mdc
+   Load only the rules listed above. Read each file. Apply the specific guidance
+   that is relevant to the code you are writing.
+
+== DOCX HELPER CONVENTIONS ==
+   Read: .claude/tools/build_milo_doc.md
+   Specifically: write_cell, add_block, add_runs primitives.
+   Your add_{{BLOCK_NAME}} function must use these primitives.
+
+== OUTPUT 1 — Block JS ==
+
+Write express/code/blocks/{{BLOCK_NAME}}/{{BLOCK_NAME}}.js
+
+Hard rules:
+- Export default async function decorate(block) or init(el) per block-patterns.mdc
+- First lines of decorate(): annotate each row consumption against the schema:
+    // Row 0: 1 merged col — <content> (querySelector on merged cell, not destructure)
+    // Row 1: 2 cols — [col 0: title | col 1: image]
+- MERGED ROW RULE: if schema says a row is merged (1 col), read the single cell with
+  querySelector — NEVER do `const [a, b, c] = [...row.children]` on a merged row.
+  A merged row has exactly one child element. Destructuring it into multiple variables
+  gives undefined for variables beyond the first — this is a silent, hard-to-debug bug.
+- MULTI-COL ROW RULE: if schema says N cols, destructure exactly N children. No more.
+- No hardcoded hex colors — use CSS custom properties
+- No inline styles — use CSS classes
+
+After writing, run: npx eslint --fix express/code/blocks/{{BLOCK_NAME}}/{{BLOCK_NAME}}.js
+Then verify: npx eslint express/code/blocks/{{BLOCK_NAME}}/{{BLOCK_NAME}}.js
+
+== OUTPUT 2 — Block CSS ==
+
+Write express/code/blocks/{{BLOCK_NAME}}/{{BLOCK_NAME}}.css
+
+Hard rules:
+- Mobile-first. Add breakpoints only where the Figma spec shows layout changes.
+- Map Figma pixel values to nearest --spacing-* or --heading-font-size-* CSS token.
+  Do not hardcode pixel values that have a token equivalent.
+- No hardcoded hex colors — use CSS custom properties from the design token system.
+- Selectors follow the block class: .{{BLOCK_NAME}} { } and .{{BLOCK_NAME}} .child { }
+
+== OUTPUT 3 — build.py helper ==
+
+Read .claude/tools/build_milo_doc.md — write_cell, add_block, add_runs sections.
+
+Return (do not write to disk) a Python function named add_{{BLOCK_NAME}}.
+Return it under:
+
+## build.py helper — add_{{BLOCK_NAME}}
+```python
+<function code>
+```
+
+Helper rules:
+- Row structure must match AUTHORING_SCHEMA exactly:
+    If Row N is 1 merged col → pass [[cell_content]]
+    If Row N is 2 cols → pass [[col0_content, col1_content]]
+- Add a comment above add_block() quoting the schema row:
+    # Row 0: 1 merged col — H2 + body + CTA (per authoring_schema)
+    # Row 1: 2 cols — [title | image]
+- Image URLs: use Figma MCP asset URLs or picsum seeds — NEVER AEM media_ paths.
+  AEM paths resolve only after DA upload and produce [image: alt] in the review docx.
+- Function signature: def add_{{BLOCK_NAME}}(doc, *, <content params>):
+- Use ('h', level, text) | ('p', [parts]) | ('img', url, alt) tuples in write_cell