
Eliteforge Brainstorming
- 12 installs
- Updated July 24, 2026
- cloudsen/eliteforge-skills
Turns ideas into designs through collaborative dialogue before any implementation, requiring an approved design first.
About
Guides the agent to explore project context and ask one question at a time to turn an idea into a design, blocking any implementation until the user approves. A developer uses it before creating features, components, or behavior changes.
- Present a design and get approval before writing any code
- No project is too simple to skip the design step
Eliteforge Brainstorming by the numbers
- 12 all-time installs (skills.sh)
- Ranked #2,163 of 3,282 Productivity & Planning skills by installs in the Skillselion catalog
- Data as of Jul 29, 2026 (Skillselion catalog sync)
npx skills add https://github.com/cloudsen/eliteforge-skills --skill eliteforge-brainstormingAdd your badge
Show developers this skill is listed on Skillselion. Paste this into your README.
| Installs | 12 |
|---|---|
| Last updated | July 24, 2026 |
| Repository | cloudsen/eliteforge-skills ↗ |
What it does
Turns ideas into designs through collaborative dialogue before any implementation, requiring an approved design first.
Files
Brainstorming Ideas Into Designs
Help turn ideas into fully formed designs and specs through natural collaborative dialogue.
Start by understanding the current project context, then ask questions one at a time to refine the idea. Once you understand what you're building, present the design and get user approval.
Do NOT invoke any implementation skill, write any code, scaffold any project, or take any implementation action until you have presented a design and the user has approved it. This applies to EVERY project regardless of perceived simplicity.
Environment Variables
ELITEFORGE_SKILL_BRAINSTORMING_SPEC_DIR[optional] Directory for committed brainstorming spec documents.
Anti-Pattern: "This Is Too Simple To Need A Design"
Every creative project goes through this process. A todo list, a single-function utility, a config change — all of them. "Simple" projects are where unexamined assumptions cause the most wasted work. The design can be short (a few sentences for truly simple projects), but you MUST present it and get approval.
Checklist
You MUST complete these items in order:
1. Explore project context — check files, docs, recent commits 2. Offer visual companion (if topic will involve visual questions) — this is its own message, not combined with a clarifying question. See the Visual Companion section below. 3. Ask clarifying questions — one at a time, understand purpose/constraints/success criteria 4. Propose 2-3 approaches — with trade-offs and your recommendation 5. Present design — in sections scaled to their complexity, get user approval after each section 6. Write design doc — save it under the resolved topic root and commit 7. Spec self-review — quick inline check for placeholders, contradictions, ambiguity, scope (see below) 8. User reviews written spec — ask user to review the spec file before proceeding 9. End brainstorming — stop after the spec is approved and committed; downstream planning and implementation are outside this skill
Process Flow
digraph brainstorming {
"Explore project context" [shape=box];
"Visual questions ahead?" [shape=diamond];
"Offer Visual Companion\n(own message, no other content)" [shape=box];
"Ask clarifying questions" [shape=box];
"Propose 2-3 approaches" [shape=box];
"Present design sections" [shape=box];
"User approves design?" [shape=diamond];
"Write design doc" [shape=box];
"Spec self-review\n(fix inline)" [shape=box];
"User reviews spec?" [shape=diamond];
"Brainstorming complete" [shape=doublecircle];
"Explore project context" -> "Visual questions ahead?";
"Visual questions ahead?" -> "Offer Visual Companion\n(own message, no other content)" [label="yes"];
"Visual questions ahead?" -> "Ask clarifying questions" [label="no"];
"Offer Visual Companion\n(own message, no other content)" -> "Ask clarifying questions";
"Ask clarifying questions" -> "Propose 2-3 approaches";
"Propose 2-3 approaches" -> "Present design sections";
"Present design sections" -> "User approves design?";
"User approves design?" -> "Present design sections" [label="no, revise"];
"User approves design?" -> "Write design doc" [label="yes"];
"Write design doc" -> "Spec self-review\n(fix inline)";
"Spec self-review\n(fix inline)" -> "User reviews spec?";
"User reviews spec?" -> "Write design doc" [label="changes requested"];
"User reviews spec?" -> "Brainstorming complete" [label="approved"];
}The terminal state is an approved and committed spec. Do NOT jump straight from brainstorming into coding or scaffolding while this skill is active. This skill ends at the spec boundary.
The Process
Understanding the idea:
- Check out the current project state first (files, docs, recent commits)
- Before asking detailed questions, assess scope: if the request describes multiple independent subsystems (e.g., "build a platform with chat, file storage, billing, and analytics"), flag this immediately. Don't spend questions refining details of a project that needs to be decomposed first.
- If the project is too large for a single spec, help the user decompose into sub-projects: what are the independent pieces, how do they relate, what order should they be built? Then brainstorm the first sub-project through the normal design flow. Each sub-project gets its own spec -> plan -> implementation cycle.
- For appropriately-scoped projects, ask questions one at a time to refine the idea
- Prefer multiple choice questions when possible, but open-ended is fine too
- When presenting multiple choice options, invoke the
questiontool (interactive choice UI) instead of listing numbered choices in plain text and asking users to type "1 / 2 / 3". Thequestiontool renders clickable options in the terminal. - Only one question per message
- Focus on understanding: purpose, constraints, success criteria
Exploring approaches:
- Propose 2-3 different approaches with trade-offs
- Present options conversationally with your recommendation and reasoning
- Lead with your recommended option and explain why
Presenting the design:
- Once you believe you understand what you're building, present the design
- Scale each section to its complexity: a few sentences if straightforward, up to 200-300 words if nuanced
- Ask after each section whether it looks right so far
- Cover architecture, components, data flow, error handling, and testing
- Be ready to go back and clarify if something doesn't make sense
Design for isolation and clarity:
- Break the system into smaller units that each have one clear purpose, communicate through well-defined interfaces, and can be understood and tested independently
- For each unit, you should be able to answer: what does it do, how do you use it, and what does it depend on?
- Can someone understand what a unit does without reading its internals? Can you change the internals without breaking consumers? If not, the boundaries need work.
- Smaller, well-bounded units are also easier for you to work with - you reason better about code you can hold in context at once, and your edits are more reliable when files are focused. When a file grows large, that's often a signal that it's doing too much.
Working in existing codebases:
- Explore the current structure before proposing changes. Follow existing patterns.
- Where existing code has problems that affect the work (e.g., a file that's grown too large, unclear boundaries, tangled responsibilities), include targeted improvements as part of the design - the way a good developer improves code they're working in.
- Do not propose unrelated refactoring
After the Design
Documentation:
- Use
eliteforge-writing-clearly-and-conciselyskill if available - Resolve
topic-rootin this order: - If the current task explicitly names a Markdown spec file path, use its parent directory as
topic-rootand write the spec to that exact file. - Otherwise, if the current task explicitly names a spec directory, use that directory as
topic-root. - Otherwise, if
ELITEFORGE_SKILL_BRAINSTORMING_SPEC_DIRis set, use that directory astopic-root. - Otherwise, use the default
docs/brainstorm/<topic>/. - Write the validated design (spec):
- to the explicit Markdown file path, if one was provided for the task, or
- to
<topic-root>/YYYY-MM-DD-HH-mm-ss.mdotherwise. - When using the visual companion, use
<topic-root>/runtime/as the persistent runtime root. - Commit the design document to git
Spec Self-Review:
After writing the spec document, look at it with fresh eyes:
1. Placeholder scan: Any "TBD", "TODO", incomplete sections, or vague requirements? Fix them. 2. Internal consistency: Do any sections contradict each other? Does the architecture match the feature descriptions? 3. Scope check: Is this focused enough for a single implementation plan, or does it need decomposition? 4. Ambiguity check: Could any requirement be interpreted two different ways? If so, pick one and make it explicit.
Fix any issues inline. No need to re-review — just fix and move on.
User Review Gate:
After the review loop passes, ask the user to review the written spec before proceeding:
"Spec written and committed to <path>. Please review it and let me know if you want to make any changes before we start writing out the implementation plan."Wait for the user's response. If they request changes, make them and repeat the review loop. Only proceed once the user approves.
Key Principles
- One question at a time - Don't overwhelm with multiple questions
- Multiple choice preferred - Easier to answer than open-ended when possible
- YAGNI ruthlessly - Remove unnecessary features from all designs
- Explore alternatives - Always propose 2-3 approaches before settling
- Incremental validation - Present design, get approval before moving on
- Be flexible - Go back and clarify when something doesn't make sense
Visual Companion
A browser-based companion for showing mockups, diagrams, and visual options during brainstorming. Available as a tool — not a mode. Accepting the companion means it's available for questions that benefit from visual treatment; it does NOT mean every question goes through the browser.
Offering the companion: When you anticipate that upcoming questions will involve visual content (mockups, layouts, diagrams), offer it once for consent:
"Some of what we're working on might be easier to explain if I can show it to you in a web browser. I can put together mockups, diagrams, comparisons, and other visuals as we go. This feature is still new and can be token-intensive. Want to try it? (Requires opening a local URL)"
This offer MUST be its own message. Do not combine it with clarifying questions, context summaries, or any other content. The message should contain ONLY the offer above and nothing else. Wait for the user's response before continuing. If they decline, proceed with text-only brainstorming.
Per-question decision: Even after the user accepts, decide FOR EACH QUESTION whether to use the browser or the terminal. The test: would the user understand this better by seeing it than reading it?
- Use the browser for content that IS visual — mockups, wireframes, layout comparisons, architecture diagrams, side-by-side visual designs
- Use the terminal for content that is text — requirements questions, conceptual choices, tradeoff lists, scope decisions
If they agree to the companion, read the detailed guide before proceeding: references/visual-companion.md
Reference Index
- Read
references/visual-companion.mdwhen the user accepts the browser-based visual companion. - Read
references/spec-document-reviewer-prompt.mdwhen dispatching a spec document reviewer.
interface:
display_name: "EliteForge Brainstorming"
short_description: "在实现前澄清需求、比较方案并输出设计文档草案,再进入实现计划"
default_prompt: "使用 $eliteforge-brainstorming 先完成设计澄清并提交 spec,确认 spec 后再进入实现计划。"
Spec Document Reviewer Prompt Template
Use this template when dispatching a spec document reviewer subagent.
Purpose: Verify the spec is complete, consistent, and ready for implementation planning.
Dispatch after: Spec document is written to the resolved brainstorming spec directory and committed.
Task tool (general-purpose):
description: "Review spec document"
prompt: |
You are a spec document reviewer. Verify this spec is complete and ready for planning.
**Spec to review:** [SPEC_FILE_PATH]
## What to Check
| Category | What to Look For |
|----------|------------------|
| Completeness | TODOs, placeholders, "TBD", incomplete sections |
| Consistency | Internal contradictions, conflicting requirements |
| Clarity | Requirements ambiguous enough to cause someone to build the wrong thing |
| Scope | Focused enough for a single plan — not covering multiple independent subsystems |
| YAGNI | Unrequested features, over-engineering |
## Calibration
**Only flag issues that would cause real problems during implementation planning.**
A missing section, a contradiction, or a requirement so ambiguous it could be
interpreted two different ways — those are issues. Minor wording improvements,
stylistic preferences, and "sections less detailed than others" are not.
Approve unless there are serious gaps that would lead to a flawed plan.
## Output Format
## Spec Review
**Status:** Approved | Issues Found
**Issues (if any):**
- [Section X]: [specific issue] - [why it matters for planning]
**Recommendations (advisory, do not block approval):**
- [suggestions for improvement]Reviewer returns: Status, Issues (if any), Recommendations
Visual Companion Guide
Browser-based visual brainstorming companion for showing mockups, diagrams, and options.
When to Use
Decide per-question, not per-session. The test: would the user understand this better by seeing it than reading it?
Use the browser when the content itself is visual:
- UI mockups — wireframes, layouts, navigation structures, component designs
- Architecture diagrams — system components, data flow, relationship maps
- Side-by-side visual comparisons — comparing two layouts, two color schemes, two design directions
- Design polish — when the question is about look and feel, spacing, visual hierarchy
- Spatial relationships — state machines, flowcharts, entity relationships rendered as diagrams
Use the terminal when the content is text or tabular:
- Requirements and scope questions — "what does X mean?", "which features are in scope?"
- Conceptual A/B/C choices — picking between approaches described in words
- Tradeoff lists — pros/cons, comparison tables
- Technical decisions — API design, data modeling, architectural approach selection
- Clarifying questions — anything where the answer is words, not a visual preference
A question about a UI topic is not automatically a visual question. "What kind of wizard do you want?" is conceptual — use the terminal. "Which of these wizard layouts feels right?" is visual — use the browser.
How It Works
The server watches a directory for HTML files and serves the newest one to the browser. You write HTML content to screen_dir, the user sees it in their browser and can click to select options. Selections are recorded to state_dir/events that you read on your next turn.
Content fragments vs full documents: If your HTML file starts with <!DOCTYPE or <html, the server serves it as-is (just injects the helper script). Otherwise, the server automatically wraps your content in the frame template — adding the header, CSS theme, selection indicator, and all interactive infrastructure. Write content fragments by default. Only write full documents when you need complete control over the page.
Starting a Session
# Start server with persistence (mockups saved beside the brainstorm spec)
scripts/start-server.sh --runtime-dir /path/to/docs/brainstorm/my-topic/runtime
# Returns: {"type":"server-started","port":52341,"url":"http://localhost:52341",
# "screen_dir":"/path/to/docs/brainstorm/my-topic/runtime/12345-1706000000/content",
# "state_dir":"/path/to/docs/brainstorm/my-topic/runtime/12345-1706000000/state"}Save screen_dir and state_dir from the response. Tell user to open the URL.
Finding connection info: The server writes its startup JSON to $STATE_DIR/server-info. If you launched the server in the background and didn't capture stdout, read that file to get the URL and port. When using --runtime-dir, check that runtime root for the session directory.
Note: Pass the resolved runtime root as --runtime-dir so mockups persist beside the brainstorm spec and survive server restarts. The default runtime root is <project>/docs/brainstorm/<topic>/runtime/; if the spec location was explicitly overridden, use that resolved topic root's runtime/ directory instead. Without --runtime-dir, files go to /tmp and get cleaned up. If the default topic layout is in use, remind the user to add docs/brainstorm/*/runtime/ to .gitignore if runtime artifacts should stay untracked.
Launching the server by platform:
Claude Code (macOS / Linux):
# Default mode works — the script backgrounds the server itself
scripts/start-server.sh --runtime-dir /path/to/docs/brainstorm/my-topic/runtimeClaude Code (Windows):
# Windows auto-detects and uses foreground mode, which blocks the tool call.
# Use run_in_background: true on the Bash tool call so the server survives
# across conversation turns.
scripts/start-server.sh --runtime-dir /path/to/docs/brainstorm/my-topic/runtimeWhen calling this via the Bash tool, set run_in_background: true. Then read $STATE_DIR/server-info on the next turn to get the URL and port.
Codex:
# Codex reaps background processes. The script auto-detects CODEX_CI and
# switches to foreground mode. Run it normally — no extra flags needed.
scripts/start-server.sh --runtime-dir /path/to/docs/brainstorm/my-topic/runtimeGemini CLI:
# Use --foreground and set is_background: true on your shell tool call
# so the process survives across turns
scripts/start-server.sh --runtime-dir /path/to/docs/brainstorm/my-topic/runtime --foregroundOther environments: The server must keep running in the background across conversation turns. If your environment reaps detached processes, use --foreground and launch the command with your platform's background execution mechanism.
If the URL is unreachable from your browser (common in remote/containerized setups), bind a non-loopback host:
scripts/start-server.sh \
--runtime-dir /path/to/docs/brainstorm/my-topic/runtime \
--host 0.0.0.0 \
--url-host localhostUse --url-host to control what hostname is printed in the returned URL JSON.
The Loop
1. Check server is alive, then write HTML to a new file in screen_dir:
- Before each write, check that
$STATE_DIR/server-infoexists. If it doesn't (or$STATE_DIR/server-stoppedexists), the server has shut down — restart it withstart-server.shbefore continuing. The server auto-exits after 30 minutes of inactivity. - Use semantic filenames:
platform.html,visual-style.html,layout.html - Never reuse filenames — each screen gets a fresh file
- Use your platform's file-writing mechanism. In Codex, prefer
apply_patchfor manual file creation or updates. Never use `cat`/heredoc because it dumps noise into the terminal. - Server automatically serves the newest file
2. Tell user what to expect and end your turn:
- Remind them of the URL (every step, not just first)
- Give a brief text summary of what's on screen (e.g., "Showing 3 layout options for the homepage")
- Ask them to respond in the terminal: "Take a look and let me know what you think. Click to select an option if you'd like."
3. On your next turn — after the user responds in the terminal:
- Read
$STATE_DIR/eventsif it exists — this contains the user's browser interactions (clicks, selections) as JSON lines - Merge with the user's terminal text to get the full picture
- The terminal message is the primary feedback;
state_dir/eventsprovides structured interaction data
4. Iterate or advance — if feedback changes current screen, write a new file (e.g., layout-v2.html). Only move to the next question when the current step is validated.
5. Unload when returning to terminal — when the next step doesn't need the browser (e.g., a clarifying question, a tradeoff discussion), push a waiting screen to clear the stale content:
<!-- filename: waiting.html (or waiting-2.html, etc.) -->
<div style="display:flex;align-items:center;justify-content:center;min-height:60vh">
<p class="subtitle">Continuing in terminal...</p>
</div>This prevents the user from staring at a resolved choice while the conversation has moved on. When the next visual question comes up, push a new content file as usual.
6. Repeat until done.
Writing Content Fragments
Write just the content that goes inside the page. The server wraps it in the frame template automatically (header, theme CSS, selection indicator, and all interactive infrastructure).
Minimal example:
<h2>Which layout works better?</h2>
<p class="subtitle">Consider readability and visual hierarchy</p>
<div class="options">
<div class="option" data-choice="a" onclick="toggleSelect(this)">
<div class="letter">A</div>
<div class="content">
<h3>Single Column</h3>
<p>Clean, focused reading experience</p>
</div>
</div>
<div class="option" data-choice="b" onclick="toggleSelect(this)">
<div class="letter">B</div>
<div class="content">
<h3>Two Column</h3>
<p>Sidebar navigation with main content</p>
</div>
</div>
</div>That's it. No <html>, no CSS, no <script> tags needed. The server provides all of that.
CSS Classes Available
The frame template provides these CSS classes for your content:
Options (A/B/C choices)
<div class="options">
<div class="option" data-choice="a" onclick="toggleSelect(this)">
<div class="letter">A</div>
<div class="content">
<h3>Title</h3>
<p>Description</p>
</div>
</div>
</div>Multi-select: Add data-multiselect to the container to let users select multiple options. Each click toggles the item. The indicator bar shows the count.
<div class="options" data-multiselect>
<!-- same option markup — users can select/deselect multiple -->
</div>Cards (visual designs)
<div class="cards">
<div class="card" data-choice="design1" onclick="toggleSelect(this)">
<div class="card-image"><!-- mockup content --></div>
<div class="card-body">
<h3>Name</h3>
<p>Description</p>
</div>
</div>
</div>Mockup container
<div class="mockup">
<div class="mockup-header">Preview: Dashboard Layout</div>
<div class="mockup-body"><!-- your mockup HTML --></div>
</div>Split view (side-by-side)
<div class="split">
<div class="mockup"><!-- left --></div>
<div class="mockup"><!-- right --></div>
</div>Pros/Cons
<div class="pros-cons">
<div class="pros"><h4>Pros</h4><ul><li>Benefit</li></ul></div>
<div class="cons"><h4>Cons</h4><ul><li>Drawback</li></ul></div>
</div>Mock elements (wireframe building blocks)
<div class="mock-nav">Logo | Home | About | Contact</div>
<div style="display: flex;">
<div class="mock-sidebar">Navigation</div>
<div class="mock-content">Main content area</div>
</div>
<button class="mock-button">Action Button</button>
<input class="mock-input" placeholder="Input field">
<div class="placeholder">Placeholder area</div>Typography and sections
h2— page titleh3— section heading.subtitle— secondary text below title.section— content block with bottom margin.label— small uppercase label text
Browser Events Format
When the user clicks options in the browser, their interactions are recorded to $STATE_DIR/events (one JSON object per line). The file is cleared automatically when you push a new screen.
{"type":"click","choice":"a","text":"Option A - Simple Layout","timestamp":1706000101}
{"type":"click","choice":"c","text":"Option C - Complex Grid","timestamp":1706000108}
{"type":"click","choice":"b","text":"Option B - Hybrid","timestamp":1706000115}The full event stream shows the user's exploration path — they may click multiple options before settling. The last choice event is typically the final selection, but the pattern of clicks can reveal hesitation or preferences worth asking about.
If $STATE_DIR/events doesn't exist, the user didn't interact with the browser — use only their terminal text.
Design Tips
- Scale fidelity to the question — wireframes for layout, polish for polish questions
- Explain the question on each page — "Which layout feels more professional?" not just "Pick one"
- Iterate before advancing — if feedback changes current screen, write a new version
- 2-4 options max per screen
- Use real content when it matters — for a photography portfolio, use actual images (Unsplash). Placeholder content obscures design issues.
- Keep mockups simple — focus on layout and structure, not pixel-perfect design
File Naming
- Use semantic names:
platform.html,visual-style.html,layout.html - Never reuse filenames — each screen must be a new file
- For iterations: append version suffix like
layout-v2.html,layout-v3.html - Server serves newest file by modification time
Cleaning Up
scripts/stop-server.sh $SESSION_DIRIf the session used --runtime-dir, mockup files persist in that runtime root for later reference. Only /tmp sessions get deleted on stop.
Reference
- Frame template (CSS reference):
scripts/frame-template.html - Helper script (client-side):
scripts/helper.js
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>EliteForge Brainstorming Companion</title>
<style>
/*
* BRAINSTORM COMPANION FRAME TEMPLATE
*
* This template provides a consistent frame with:
* - OS-aware light/dark theming
* - Fixed header and selection indicator bar
* - Scrollable main content area
* - CSS helpers for common UI patterns
*
* Content is injected via placeholder comment in #brainstorm-content.
*/
* { box-sizing: border-box; margin: 0; padding: 0; }
html, body { height: 100%; overflow: hidden; }
:root {
--bg-primary: #f5f5f7;
--bg-secondary: #ffffff;
--bg-tertiary: #e5e5e7;
--border: #d1d1d6;
--text-primary: #1d1d1f;
--text-secondary: #86868b;
--text-tertiary: #aeaeb2;
--accent: #0071e3;
--accent-hover: #0077ed;
--success: #34c759;
--warning: #ff9f0a;
--error: #ff3b30;
--selected-bg: #e8f4fd;
--selected-border: #0071e3;
}
@media (prefers-color-scheme: dark) {
:root {
--bg-primary: #1d1d1f;
--bg-secondary: #2d2d2f;
--bg-tertiary: #3d3d3f;
--border: #424245;
--text-primary: #f5f5f7;
--text-secondary: #86868b;
--text-tertiary: #636366;
--accent: #0a84ff;
--accent-hover: #409cff;
--selected-bg: rgba(10, 132, 255, 0.15);
--selected-border: #0a84ff;
}
}
body {
font-family: system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
background: var(--bg-primary);
color: var(--text-primary);
display: flex;
flex-direction: column;
line-height: 1.5;
}
.header {
background: var(--bg-secondary);
padding: 0.5rem 1.5rem;
display: flex;
justify-content: space-between;
align-items: center;
border-bottom: 1px solid var(--border);
flex-shrink: 0;
}
.header h1 { font-size: 0.85rem; font-weight: 500; color: var(--text-secondary); }
.header .status { font-size: 0.7rem; color: var(--success); display: flex; align-items: center; gap: 0.4rem; }
.header .status::before { content: ''; width: 6px; height: 6px; background: var(--success); border-radius: 50%; }
.main { flex: 1; overflow-y: auto; }
#brainstorm-content { padding: 2rem; min-height: 100%; }
.indicator-bar {
background: var(--bg-secondary);
border-top: 1px solid var(--border);
padding: 0.5rem 1.5rem;
flex-shrink: 0;
text-align: center;
}
.indicator-bar span {
font-size: 0.75rem;
color: var(--text-secondary);
}
.indicator-bar .selected-text {
color: var(--accent);
font-weight: 500;
}
h2 { font-size: 1.5rem; font-weight: 600; margin-bottom: 0.5rem; }
h3 { font-size: 1.1rem; font-weight: 600; margin-bottom: 0.25rem; }
.subtitle { color: var(--text-secondary); margin-bottom: 1.5rem; }
.section { margin-bottom: 2rem; }
.label { font-size: 0.7rem; color: var(--text-secondary); text-transform: uppercase; letter-spacing: 0.05em; margin-bottom: 0.5rem; }
.options { display: flex; flex-direction: column; gap: 0.75rem; }
.option {
background: var(--bg-secondary);
border: 2px solid var(--border);
border-radius: 12px;
padding: 1rem 1.25rem;
cursor: pointer;
transition: all 0.15s ease;
display: flex;
align-items: flex-start;
gap: 1rem;
}
.option:hover { border-color: var(--accent); }
.option.selected { background: var(--selected-bg); border-color: var(--selected-border); }
.option .letter {
background: var(--bg-tertiary);
color: var(--text-secondary);
width: 1.75rem; height: 1.75rem;
border-radius: 6px;
display: flex; align-items: center; justify-content: center;
font-weight: 600; font-size: 0.85rem; flex-shrink: 0;
}
.option.selected .letter { background: var(--accent); color: white; }
.option .content { flex: 1; }
.option .content h3 { font-size: 0.95rem; margin-bottom: 0.15rem; }
.option .content p { color: var(--text-secondary); font-size: 0.85rem; margin: 0; }
.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 1rem; }
.card {
background: var(--bg-secondary);
border: 1px solid var(--border);
border-radius: 12px;
overflow: hidden;
cursor: pointer;
transition: all 0.15s ease;
}
.card:hover { border-color: var(--accent); transform: translateY(-2px); box-shadow: 0 4px 12px rgba(0,0,0,0.1); }
.card.selected { border-color: var(--selected-border); border-width: 2px; }
.card-image { background: var(--bg-tertiary); aspect-ratio: 16/10; display: flex; align-items: center; justify-content: center; }
.card-body { padding: 1rem; }
.card-body h3 { margin-bottom: 0.25rem; }
.card-body p { color: var(--text-secondary); font-size: 0.85rem; }
.mockup {
background: var(--bg-secondary);
border: 1px solid var(--border);
border-radius: 12px;
overflow: hidden;
margin-bottom: 1.5rem;
}
.mockup-header {
background: var(--bg-tertiary);
padding: 0.5rem 1rem;
font-size: 0.75rem;
color: var(--text-secondary);
border-bottom: 1px solid var(--border);
}
.mockup-body { padding: 1.5rem; }
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 1.5rem; }
@media (max-width: 700px) { .split { grid-template-columns: 1fr; } }
.pros-cons { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; margin: 1rem 0; }
.pros, .cons { background: var(--bg-secondary); border-radius: 8px; padding: 1rem; }
.pros h4 { color: var(--success); font-size: 0.85rem; margin-bottom: 0.5rem; }
.cons h4 { color: var(--error); font-size: 0.85rem; margin-bottom: 0.5rem; }
.pros ul, .cons ul { margin-left: 1.25rem; font-size: 0.85rem; color: var(--text-secondary); }
.pros li, .cons li { margin-bottom: 0.25rem; }
.placeholder {
background: var(--bg-tertiary);
border: 2px dashed var(--border);
border-radius: 8px;
padding: 2rem;
text-align: center;
color: var(--text-tertiary);
}
.mock-nav { background: var(--accent); color: white; padding: 0.75rem 1rem; display: flex; gap: 1.5rem; font-size: 0.9rem; }
.mock-sidebar { background: var(--bg-tertiary); padding: 1rem; min-width: 180px; }
.mock-content { padding: 1.5rem; flex: 1; }
.mock-button { background: var(--accent); color: white; border: none; padding: 0.5rem 1rem; border-radius: 6px; font-size: 0.85rem; }
.mock-input { background: var(--bg-primary); border: 1px solid var(--border); border-radius: 6px; padding: 0.5rem; width: 100%; }
</style>
</head>
<body>
<div class="header">
<h1>EliteForge Brainstorming Companion</h1>
<div class="status">Connected</div>
</div>
<div class="main">
<div id="brainstorm-content">
<!-- CONTENT -->
</div>
</div>
<div class="indicator-bar">
<span id="indicator-text">Click an option above, then return to the terminal</span>
</div>
</body>
</html>
(function() {
const WS_URL = 'ws://' + window.location.host;
let ws = null;
let eventQueue = [];
function connect() {
ws = new WebSocket(WS_URL);
ws.onopen = () => {
eventQueue.forEach(e => ws.send(JSON.stringify(e)));
eventQueue = [];
};
ws.onmessage = (msg) => {
const data = JSON.parse(msg.data);
if (data.type === 'reload') {
window.location.reload();
}
};
ws.onclose = () => {
setTimeout(connect, 1000);
};
}
function sendEvent(event) {
event.timestamp = Date.now();
if (ws && ws.readyState === WebSocket.OPEN) {
ws.send(JSON.stringify(event));
} else {
eventQueue.push(event);
}
}
document.addEventListener('click', (e) => {
const target = e.target.closest('[data-choice]');
if (!target) return;
sendEvent({
type: 'click',
text: target.textContent.trim(),
choice: target.dataset.choice,
id: target.id || null
});
setTimeout(() => {
const indicator = document.getElementById('indicator-text');
if (!indicator) return;
const container = target.closest('.options') || target.closest('.cards');
const selected = container ? container.querySelectorAll('.selected') : [];
if (selected.length === 0) {
indicator.textContent = 'Click an option above, then return to the terminal';
} else if (selected.length === 1) {
const label = selected[0].querySelector('h3, .content h3, .card-body h3')?.textContent?.trim() || selected[0].dataset.choice;
indicator.innerHTML = '<span class="selected-text">' + label + ' selected</span> — return to terminal to continue';
} else {
indicator.innerHTML = '<span class="selected-text">' + selected.length + ' selected</span> — return to terminal to continue';
}
}, 0);
});
window.selectedChoice = null;
window.toggleSelect = function(el) {
const container = el.closest('.options') || el.closest('.cards');
const multi = container && container.dataset.multiselect !== undefined;
if (container && !multi) {
container.querySelectorAll('.option, .card').forEach(o => o.classList.remove('selected'));
}
if (multi) {
el.classList.toggle('selected');
} else {
el.classList.add('selected');
}
window.selectedChoice = el.dataset.choice;
};
window.brainstorm = {
send: sendEvent,
choice: (value, metadata = {}) => sendEvent({ type: 'choice', value, ...metadata })
};
connect();
})();
const crypto = require('crypto');
const http = require('http');
const fs = require('fs');
const path = require('path');
const OPCODES = { TEXT: 0x01, CLOSE: 0x08, PING: 0x09, PONG: 0x0A };
const WS_MAGIC = '258EAFA5-E914-47DA-95CA-C5AB0DC85B11';
function computeAcceptKey(clientKey) {
return crypto.createHash('sha1').update(clientKey + WS_MAGIC).digest('base64');
}
function encodeFrame(opcode, payload) {
const fin = 0x80;
const len = payload.length;
let header;
if (len < 126) {
header = Buffer.alloc(2);
header[0] = fin | opcode;
header[1] = len;
} else if (len < 65536) {
header = Buffer.alloc(4);
header[0] = fin | opcode;
header[1] = 126;
header.writeUInt16BE(len, 2);
} else {
header = Buffer.alloc(10);
header[0] = fin | opcode;
header[1] = 127;
header.writeBigUInt64BE(BigInt(len), 2);
}
return Buffer.concat([header, payload]);
}
function decodeFrame(buffer) {
if (buffer.length < 2) return null;
const secondByte = buffer[1];
const opcode = buffer[0] & 0x0F;
const masked = (secondByte & 0x80) !== 0;
let payloadLen = secondByte & 0x7F;
let offset = 2;
if (!masked) throw new Error('Client frames must be masked');
if (payloadLen === 126) {
if (buffer.length < 4) return null;
payloadLen = buffer.readUInt16BE(2);
offset = 4;
} else if (payloadLen === 127) {
if (buffer.length < 10) return null;
payloadLen = Number(buffer.readBigUInt64BE(2));
offset = 10;
}
const maskOffset = offset;
const dataOffset = offset + 4;
const totalLen = dataOffset + payloadLen;
if (buffer.length < totalLen) return null;
const mask = buffer.slice(maskOffset, dataOffset);
const data = Buffer.alloc(payloadLen);
for (let i = 0; i < payloadLen; i++) {
data[i] = buffer[dataOffset + i] ^ mask[i % 4];
}
return { opcode, payload: data, bytesConsumed: totalLen };
}
const PORT = process.env.BRAINSTORM_PORT || (49152 + Math.floor(Math.random() * 16383));
const HOST = process.env.BRAINSTORM_HOST || '127.0.0.1';
const URL_HOST = process.env.BRAINSTORM_URL_HOST || (HOST === '127.0.0.1' ? 'localhost' : HOST);
const SESSION_DIR = process.env.BRAINSTORM_DIR || '/tmp/brainstorm';
const CONTENT_DIR = path.join(SESSION_DIR, 'content');
const STATE_DIR = path.join(SESSION_DIR, 'state');
let ownerPid = process.env.BRAINSTORM_OWNER_PID ? Number(process.env.BRAINSTORM_OWNER_PID) : null;
const MIME_TYPES = {
'.html': 'text/html',
'.css': 'text/css',
'.js': 'application/javascript',
'.json': 'application/json',
'.png': 'image/png',
'.jpg': 'image/jpeg',
'.jpeg': 'image/jpeg',
'.gif': 'image/gif',
'.svg': 'image/svg+xml'
};
const WAITING_PAGE = `<!DOCTYPE html>
<html>
<head><meta charset="utf-8"><title>EliteForge Brainstorming Companion</title>
<style>body { font-family: system-ui, sans-serif; padding: 2rem; max-width: 800px; margin: 0 auto; }
h1 { color: #333; } p { color: #666; }</style>
</head>
<body><h1>EliteForge Brainstorming Companion</h1>
<p>Waiting for the agent to push a screen...</p></body></html>`;
const frameTemplate = fs.readFileSync(path.join(__dirname, 'frame-template.html'), 'utf-8');
const helperScript = fs.readFileSync(path.join(__dirname, 'helper.js'), 'utf-8');
const helperInjection = '<script>\n' + helperScript + '\n</script>';
function isFullDocument(html) {
const trimmed = html.trimStart().toLowerCase();
return trimmed.startsWith('<!doctype') || trimmed.startsWith('<html');
}
function wrapInFrame(content) {
return frameTemplate.replace('<!-- CONTENT -->', content);
}
function getNewestScreen() {
const files = fs.readdirSync(CONTENT_DIR)
.filter((f) => f.endsWith('.html'))
.map((f) => {
const fp = path.join(CONTENT_DIR, f);
return { path: fp, mtime: fs.statSync(fp).mtime.getTime() };
})
.sort((a, b) => b.mtime - a.mtime);
return files.length > 0 ? files[0].path : null;
}
function handleRequest(req, res) {
touchActivity();
if (req.method === 'GET' && req.url === '/') {
const screenFile = getNewestScreen();
let html = screenFile
? ((raw) => (isFullDocument(raw) ? raw : wrapInFrame(raw)))(fs.readFileSync(screenFile, 'utf-8'))
: WAITING_PAGE;
if (html.includes('</body>')) {
html = html.replace('</body>', helperInjection + '\n</body>');
} else {
html += helperInjection;
}
res.writeHead(200, { 'Content-Type': 'text/html; charset=utf-8' });
res.end(html);
} else if (req.method === 'GET' && req.url.startsWith('/files/')) {
const fileName = req.url.slice(7);
const filePath = path.join(CONTENT_DIR, path.basename(fileName));
if (!fs.existsSync(filePath)) {
res.writeHead(404);
res.end('Not found');
return;
}
const ext = path.extname(filePath).toLowerCase();
const contentType = MIME_TYPES[ext] || 'application/octet-stream';
res.writeHead(200, { 'Content-Type': contentType });
res.end(fs.readFileSync(filePath));
} else {
res.writeHead(404);
res.end('Not found');
}
}
const clients = new Set();
function handleUpgrade(req, socket) {
const key = req.headers['sec-websocket-key'];
if (!key) {
socket.destroy();
return;
}
const accept = computeAcceptKey(key);
socket.write(
'HTTP/1.1 101 Switching Protocols\r\n' +
'Upgrade: websocket\r\n' +
'Connection: Upgrade\r\n' +
'Sec-WebSocket-Accept: ' + accept + '\r\n\r\n'
);
let buffer = Buffer.alloc(0);
clients.add(socket);
socket.on('data', (chunk) => {
buffer = Buffer.concat([buffer, chunk]);
while (buffer.length > 0) {
let result;
try {
result = decodeFrame(buffer);
} catch (e) {
socket.end(encodeFrame(OPCODES.CLOSE, Buffer.alloc(0)));
clients.delete(socket);
return;
}
if (!result) break;
buffer = buffer.slice(result.bytesConsumed);
switch (result.opcode) {
case OPCODES.TEXT:
handleMessage(result.payload.toString());
break;
case OPCODES.CLOSE:
socket.end(encodeFrame(OPCODES.CLOSE, Buffer.alloc(0)));
clients.delete(socket);
return;
case OPCODES.PING:
socket.write(encodeFrame(OPCODES.PONG, result.payload));
break;
case OPCODES.PONG:
break;
default: {
const closeBuf = Buffer.alloc(2);
closeBuf.writeUInt16BE(1003);
socket.end(encodeFrame(OPCODES.CLOSE, closeBuf));
clients.delete(socket);
return;
}
}
}
});
socket.on('close', () => clients.delete(socket));
socket.on('error', () => clients.delete(socket));
}
function handleMessage(text) {
let event;
try {
event = JSON.parse(text);
} catch (e) {
console.error('Failed to parse WebSocket message:', e.message);
return;
}
touchActivity();
console.log(JSON.stringify({ source: 'user-event', ...event }));
if (event.choice) {
const eventsFile = path.join(STATE_DIR, 'events');
fs.appendFileSync(eventsFile, JSON.stringify(event) + '\n');
}
}
function broadcast(msg) {
const frame = encodeFrame(OPCODES.TEXT, Buffer.from(JSON.stringify(msg)));
for (const socket of clients) {
try {
socket.write(frame);
} catch (e) {
clients.delete(socket);
}
}
}
const IDLE_TIMEOUT_MS = 30 * 60 * 1000;
let lastActivity = Date.now();
function touchActivity() {
lastActivity = Date.now();
}
const debounceTimers = new Map();
function startServer() {
if (!fs.existsSync(CONTENT_DIR)) fs.mkdirSync(CONTENT_DIR, { recursive: true });
if (!fs.existsSync(STATE_DIR)) fs.mkdirSync(STATE_DIR, { recursive: true });
const knownFiles = new Set(
fs.readdirSync(CONTENT_DIR).filter((f) => f.endsWith('.html'))
);
const server = http.createServer(handleRequest);
server.on('upgrade', handleUpgrade);
const watcher = fs.watch(CONTENT_DIR, (eventType, filename) => {
if (!filename || !filename.endsWith('.html')) return;
if (debounceTimers.has(filename)) clearTimeout(debounceTimers.get(filename));
debounceTimers.set(filename, setTimeout(() => {
debounceTimers.delete(filename);
const filePath = path.join(CONTENT_DIR, filename);
if (!fs.existsSync(filePath)) return;
touchActivity();
if (!knownFiles.has(filename)) {
knownFiles.add(filename);
const eventsFile = path.join(STATE_DIR, 'events');
if (fs.existsSync(eventsFile)) fs.unlinkSync(eventsFile);
console.log(JSON.stringify({ type: 'screen-added', file: filePath }));
} else {
console.log(JSON.stringify({ type: 'screen-updated', file: filePath }));
}
broadcast({ type: 'reload' });
}, 100));
});
watcher.on('error', (err) => console.error('fs.watch error:', err.message));
function shutdown(reason) {
console.log(JSON.stringify({ type: 'server-stopped', reason }));
const infoFile = path.join(STATE_DIR, 'server-info');
if (fs.existsSync(infoFile)) fs.unlinkSync(infoFile);
fs.writeFileSync(
path.join(STATE_DIR, 'server-stopped'),
JSON.stringify({ reason, timestamp: Date.now() }) + '\n'
);
watcher.close();
clearInterval(lifecycleCheck);
server.close(() => process.exit(0));
}
function ownerAlive() {
if (!ownerPid) return true;
try {
process.kill(ownerPid, 0);
return true;
} catch (e) {
return e.code === 'EPERM';
}
}
const lifecycleCheck = setInterval(() => {
if (!ownerAlive()) shutdown('owner process exited');
else if (Date.now() - lastActivity > IDLE_TIMEOUT_MS) shutdown('idle timeout');
}, 60 * 1000);
lifecycleCheck.unref();
if (ownerPid) {
try {
process.kill(ownerPid, 0);
} catch (e) {
if (e.code !== 'EPERM') {
console.log(JSON.stringify({ type: 'owner-pid-invalid', pid: ownerPid, reason: 'dead at startup' }));
ownerPid = null;
}
}
}
server.listen(PORT, HOST, () => {
const info = JSON.stringify({
type: 'server-started',
port: Number(PORT),
host: HOST,
url_host: URL_HOST,
url: 'http://' + URL_HOST + ':' + PORT,
screen_dir: CONTENT_DIR,
state_dir: STATE_DIR
});
console.log(info);
fs.writeFileSync(path.join(STATE_DIR, 'server-info'), info + '\n');
});
}
if (require.main === module) {
startServer();
}
module.exports = { computeAcceptKey, encodeFrame, decodeFrame, OPCODES };
#!/usr/bin/env bash
# Start the brainstorm server and output connection info
# Usage: start-server.sh [--runtime-dir <path>] [--host <bind-host>] [--url-host <display-host>] [--foreground] [--background]
#
# Starts server on a random high port, outputs JSON with URL.
# Each session gets its own directory to avoid conflicts.
#
# Options:
# --runtime-dir <path> Store session files under <path>/<session-id>/
# instead of /tmp. For example:
# docs/brainstorm/<topic>/runtime/<session-id>/
# --host <bind-host> Host/interface to bind (default: 127.0.0.1).
# Use 0.0.0.0 in remote/containerized environments.
# --url-host <host> Hostname shown in returned URL JSON.
# --foreground Run server in the current terminal (no backgrounding).
# --background Force background mode (overrides Codex auto-foreground).
SCRIPT_DIR="$(cd "$(dirname "$0")" && pwd)"
RUNTIME_DIR=""
FOREGROUND="false"
FORCE_BACKGROUND="false"
BIND_HOST="127.0.0.1"
URL_HOST=""
while [[ $# -gt 0 ]]; do
case "$1" in
--runtime-dir)
RUNTIME_DIR="$2"
shift 2
;;
--host)
BIND_HOST="$2"
shift 2
;;
--url-host)
URL_HOST="$2"
shift 2
;;
--foreground|--no-daemon)
FOREGROUND="true"
shift
;;
--background|--daemon)
FORCE_BACKGROUND="true"
shift
;;
*)
echo "{\"error\": \"Unknown argument: $1\"}"
exit 1
;;
esac
done
if [[ -z "$URL_HOST" ]]; then
if [[ "$BIND_HOST" == "127.0.0.1" || "$BIND_HOST" == "localhost" ]]; then
URL_HOST="localhost"
else
URL_HOST="$BIND_HOST"
fi
fi
if [[ -n "${CODEX_CI:-}" && "$FOREGROUND" != "true" && "$FORCE_BACKGROUND" != "true" ]]; then
FOREGROUND="true"
fi
if [[ "$FOREGROUND" != "true" && "$FORCE_BACKGROUND" != "true" ]]; then
case "${OSTYPE:-}" in
msys*|cygwin*|mingw*) FOREGROUND="true" ;;
esac
if [[ -n "${MSYSTEM:-}" ]]; then
FOREGROUND="true"
fi
fi
SESSION_ID="$$-$(date +%s)"
if [[ -n "$RUNTIME_DIR" ]]; then
SESSION_DIR="${RUNTIME_DIR%/}/${SESSION_ID}"
else
SESSION_DIR="/tmp/brainstorm-${SESSION_ID}"
fi
STATE_DIR="${SESSION_DIR}/state"
PID_FILE="${STATE_DIR}/server.pid"
LOG_FILE="${STATE_DIR}/server.log"
mkdir -p "${SESSION_DIR}/content" "$STATE_DIR"
if [[ -f "$PID_FILE" ]]; then
old_pid=$(cat "$PID_FILE")
kill "$old_pid" 2>/dev/null
rm -f "$PID_FILE"
fi
cd "$SCRIPT_DIR"
OWNER_PID="$(ps -o ppid= -p "$PPID" 2>/dev/null | tr -d ' ')"
if [[ -z "$OWNER_PID" || "$OWNER_PID" == "1" ]]; then
OWNER_PID="$PPID"
fi
# Foreground mode for environments that reap detached/background processes.
if [[ "$FOREGROUND" == "true" ]]; then
echo "$$" > "$PID_FILE"
env BRAINSTORM_DIR="$SESSION_DIR" BRAINSTORM_HOST="$BIND_HOST" BRAINSTORM_URL_HOST="$URL_HOST" BRAINSTORM_OWNER_PID="$OWNER_PID" node server.cjs
exit $?
fi
nohup env BRAINSTORM_DIR="$SESSION_DIR" BRAINSTORM_HOST="$BIND_HOST" BRAINSTORM_URL_HOST="$URL_HOST" BRAINSTORM_OWNER_PID="$OWNER_PID" node server.cjs > "$LOG_FILE" 2>&1 &
SERVER_PID=$!
disown "$SERVER_PID" 2>/dev/null
echo "$SERVER_PID" > "$PID_FILE"
# Wait for server-started message (check log file)
for i in {1..50}; do
if grep -q "server-started" "$LOG_FILE" 2>/dev/null; then
# Verify server is still alive after a short window (catches process reapers)
alive="true"
for _ in {1..20}; do
if ! kill -0 "$SERVER_PID" 2>/dev/null; then
alive="false"
break
fi
sleep 0.1
done
if [[ "$alive" != "true" ]]; then
echo "{\"error\": \"Server started but was killed. Retry in a persistent terminal with: $SCRIPT_DIR/start-server.sh${RUNTIME_DIR:+ --runtime-dir $RUNTIME_DIR} --host $BIND_HOST --url-host $URL_HOST --foreground\"}"
exit 1
fi
grep "server-started" "$LOG_FILE" | head -1
exit 0
fi
sleep 0.1
done
# Timeout - server didn't start
echo '{"error": "Server failed to start within 5 seconds"}'
exit 1
#!/usr/bin/env bash
# Stop the brainstorm server and clean up
# Usage: stop-server.sh <session_dir>
#
# Kills the server process. Only deletes the session directory if it is
# under /tmp (ephemeral). Persistent directories such as
# docs/brainstorm/<topic>/runtime/ are kept so mockups can be reviewed later.
SESSION_DIR="$1"
if [[ -z "$SESSION_DIR" ]]; then
echo '{"error": "Usage: stop-server.sh <session_dir>"}'
exit 1
fi
STATE_DIR="${SESSION_DIR}/state"
PID_FILE="${STATE_DIR}/server.pid"
if [[ -f "$PID_FILE" ]]; then
pid=$(cat "$PID_FILE")
# Try to stop gracefully, fallback to force if still alive
kill "$pid" 2>/dev/null || true
# Wait for graceful shutdown (up to ~2s)
for i in {1..20}; do
if ! kill -0 "$pid" 2>/dev/null; then
break
fi
sleep 0.1
done
if kill -0 "$pid" 2>/dev/null; then
# If still running, escalate to SIGKILL
kill -9 "$pid" 2>/dev/null || true
# Give SIGKILL a moment to take effect
sleep 0.1
fi
if kill -0 "$pid" 2>/dev/null; then
echo '{"status": "failed", "error": "process still running"}'
exit 1
fi
rm -f "$PID_FILE" "${STATE_DIR}/server.log"
# Only delete ephemeral /tmp directories
if [[ "$SESSION_DIR" == /tmp/* ]]; then
rm -rf "$SESSION_DIR"
fi
echo '{"status": "stopped"}'
else
echo '{"status": "not_running"}'
fi