merge: PR #529 — feat(skills): add documentation-lookup, bun-runtime, nextjs-turbopack; feat(agents): add rust-reviewer

.agents/skills/bun-runtime/SKILL.md

@@ -0,0 +1,84 @@
+---
+name: bun-runtime
+description: Bun as runtime, package manager, bundler, and test runner. When to choose Bun vs Node, migration notes, and Vercel support.
+origin: ECC
+---
+
+# Bun Runtime
+
+Bun is a fast all-in-one JavaScript runtime and toolkit: runtime, package manager, bundler, and test runner.
+
+## When to Use
+
+- **Prefer Bun** for: new JS/TS projects, scripts where install/run speed matters, Vercel deployments with Bun runtime, and when you want a single toolchain (run + install + test + build).
+- **Prefer Node** for: maximum ecosystem compatibility, legacy tooling that assumes Node, or when a dependency has known Bun issues.
+
+Use when: adopting Bun, migrating from Node, writing or debugging Bun scripts/tests, or configuring Bun on Vercel or other platforms.
+
+## How It Works
+
+- **Runtime**: Drop-in Node-compatible runtime (built on JavaScriptCore, implemented in Zig).
+- **Package manager**: `bun install` is significantly faster than npm/yarn. Lockfile is `bun.lock` (text) by default in current Bun; older versions used `bun.lockb` (binary).
+- **Bundler**: Built-in bundler and transpiler for apps and libraries.
+- **Test runner**: Built-in `bun test` with Jest-like API.
+
+**Migration from Node**: Replace `node script.js` with `bun run script.js` or `bun script.js`. Run `bun install` in place of `npm install`; most packages work. Use `bun run` for npm scripts; `bun x` for npx-style one-off runs. Node built-ins are supported; prefer Bun APIs where they exist for better performance.
+
+**Vercel**: Set runtime to Bun in project settings. Build: `bun run build` or `bun build ./src/index.ts --outdir=dist`. Install: `bun install --frozen-lockfile` for reproducible deploys.
+
+## Examples
+
+### Run and install
+
+```bash
+# Install dependencies (creates/updates bun.lock or bun.lockb)
+bun install
+
+# Run a script or file
+bun run dev
+bun run src/index.ts
+bun src/index.ts
+```
+
+### Scripts and env
+
+```bash
+bun run --env-file=.env dev
+FOO=bar bun run script.ts
+```
+
+### Testing
+
+```bash
+bun test
+bun test --watch
+```
+
+```typescript
+// test/example.test.ts
+import { expect, test } from "bun:test";
+
+test("add", () => {
+  expect(1 + 2).toBe(3);
+});
+```
+
+### Runtime API
+
+```typescript
+const file = Bun.file("package.json");
+const json = await file.json();
+
+Bun.serve({
+  port: 3000,
+  fetch(req) {
+    return new Response("Hello");
+  },
+});
+```
+
+## Best Practices
+
+- Commit the lockfile (`bun.lock` or `bun.lockb`) for reproducible installs.
+- Prefer `bun run` for scripts. For TypeScript, Bun runs `.ts` natively.
+- Keep dependencies up to date; Bun and the ecosystem evolve quickly.

.agents/skills/bun-runtime/agents/openai.yaml

@@ -0,0 +1,7 @@
+interface:
+  display_name: "Bun Runtime"
+  short_description: "Bun as runtime, package manager, bundler, and test runner"
+  brand_color: "#FBF0DF"
+  default_prompt: "Use Bun for scripts, install, or run"
+policy:
+  allow_implicit_invocation: true

.agents/skills/documentation-lookup/SKILL.md

@@ -0,0 +1,90 @@
+---
+name: documentation-lookup
+description: Use up-to-date library and framework docs via Context7 MCP instead of training data. Activates for setup questions, API references, code examples, or when the user names a framework (e.g. React, Next.js, Prisma).
+origin: ECC
+---
+
+# Documentation Lookup (Context7)
+
+When the user asks about libraries, frameworks, or APIs, fetch current documentation via the Context7 MCP (tools `resolve-library-id` and `query-docs`) instead of relying on training data.
+
+## Core Concepts
+
+- **Context7**: MCP server that exposes live documentation; use it instead of training data for libraries and APIs.
+- **resolve-library-id**: Returns Context7-compatible library IDs (e.g. `/vercel/next.js`) from a library name and query.
+- **query-docs**: Fetches documentation and code snippets for a given library ID and question. Always call resolve-library-id first to get a valid library ID.
+
+## When to use
+
+Activate when the user:
+
+- Asks setup or configuration questions (e.g. "How do I configure Next.js middleware?")
+- Requests code that depends on a library ("Write a Prisma query for...")
+- Needs API or reference information ("What are the Supabase auth methods?")
+- Mentions specific frameworks or libraries (React, Vue, Svelte, Express, Tailwind, Prisma, Supabase, etc.)
+
+Use this skill whenever the request depends on accurate, up-to-date behavior of a library, framework, or API. Applies across harnesses that have the Context7 MCP configured (e.g. Claude Code, Cursor, Codex).
+
+## How it works
+
+### Step 1: Resolve the Library ID
+
+Call the **resolve-library-id** MCP tool with:
+
+- **libraryName**: The library or product name taken from the user's question (e.g. `Next.js`, `Prisma`, `Supabase`).
+- **query**: The user's full question. This improves relevance ranking of results.
+
+You must obtain a Context7-compatible library ID (format `/org/project` or `/org/project/version`) before querying docs. Do not call query-docs without a valid library ID from this step.
+
+### Step 2: Select the Best Match
+
+From the resolution results, choose one result using:
+
+- **Name match**: Prefer exact or closest match to what the user asked for.
+- **Benchmark score**: Higher scores indicate better documentation quality (100 is highest).
+- **Source reputation**: Prefer High or Medium reputation when available.
+- **Version**: If the user specified a version (e.g. "React 19", "Next.js 15"), prefer a version-specific library ID if listed (e.g. `/org/project/v1.2.0`).
+
+### Step 3: Fetch the Documentation
+
+Call the **query-docs** MCP tool with:
+
+- **libraryId**: The selected Context7 library ID from Step 2 (e.g. `/vercel/next.js`).
+- **query**: The user's specific question or task. Be specific to get relevant snippets.
+
+Limit: do not call query-docs (or resolve-library-id) more than 3 times per question. If the answer is unclear after 3 calls, state the uncertainty and use the best information you have rather than guessing.
+
+### Step 4: Use the Documentation
+
+- Answer the user's question using the fetched, current information.
+- Include relevant code examples from the docs when helpful.
+- Cite the library or version when it matters (e.g. "In Next.js 15...").
+
+## Examples
+
+### Example: Next.js middleware
+
+1. Call **resolve-library-id** with `libraryName: "Next.js"`, `query: "How do I set up Next.js middleware?"`.
+2. From results, pick the best match (e.g. `/vercel/next.js`) by name and benchmark score.
+3. Call **query-docs** with `libraryId: "/vercel/next.js"`, `query: "How do I set up Next.js middleware?"`.
+4. Use the returned snippets and text to answer; include a minimal `middleware.ts` example from the docs if relevant.
+
+### Example: Prisma query
+
+1. Call **resolve-library-id** with `libraryName: "Prisma"`, `query: "How do I query with relations?"`.
+2. Select the official Prisma library ID (e.g. `/prisma/prisma`).
+3. Call **query-docs** with that `libraryId` and the query.
+4. Return the Prisma Client pattern (e.g. `include` or `select`) with a short code snippet from the docs.
+
+### Example: Supabase auth methods
+
+1. Call **resolve-library-id** with `libraryName: "Supabase"`, `query: "What are the auth methods?"`.
+2. Pick the Supabase docs library ID.
+3. Call **query-docs**; summarize the auth methods and show minimal examples from the fetched docs.
+
+## Best Practices
+
+- **Be specific**: Use the user's full question as the query where possible for better relevance.
+- **Version awareness**: When users mention versions, use version-specific library IDs from the resolve step when available.
+- **Prefer official sources**: When multiple matches exist, prefer official or primary packages over community forks.
+- **No sensitive data**: Redact API keys, passwords, tokens, and other secrets from any query sent to Context7. Treat the user's question as potentially containing secrets before passing it to resolve-library-id or query-docs.

.agents/skills/documentation-lookup/agents/openai.yaml

@@ -0,0 +1,7 @@
+interface:
+  display_name: "Documentation Lookup"
+  short_description: "Fetch up-to-date library docs via Context7 MCP"
+  brand_color: "#6366F1"
+  default_prompt: "Look up docs for a library or API"
+policy:
+  allow_implicit_invocation: true

.agents/skills/nextjs-turbopack/SKILL.md

@@ -0,0 +1,44 @@
+---
+name: nextjs-turbopack
+description: Next.js 16+ and Turbopack — incremental bundling, FS caching, dev speed, and when to use Turbopack vs webpack.
+origin: ECC
+---
+
+# Next.js and Turbopack
+
+Next.js 16+ uses Turbopack by default for local development: an incremental bundler written in Rust that significantly speeds up dev startup and hot updates.
+
+## When to Use
+
+- **Turbopack (default dev)**: Use for day-to-day development. Faster cold start and HMR, especially in large apps.
+- **Webpack (legacy dev)**: Use only if you hit a Turbopack bug or rely on a webpack-only plugin in dev. Disable with `--webpack` (or `--no-turbopack` depending on your Next.js version; check the docs for your release).
+- **Production**: Production build behavior (`next build`) may use Turbopack or webpack depending on Next.js version; check the official Next.js docs for your version.
+
+Use when: developing or debugging Next.js 16+ apps, diagnosing slow dev startup or HMR, or optimizing production bundles.
+
+## How It Works
+
+- **Turbopack**: Incremental bundler for Next.js dev. Uses file-system caching so restarts are much faster (e.g. 5–14x on large projects).
+- **Default in dev**: From Next.js 16, `next dev` runs with Turbopack unless disabled.
+- **File-system caching**: Restarts reuse previous work; cache is typically under `.next`; no extra config needed for basic use.
+- **Bundle Analyzer (Next.js 16.1+)**: Experimental Bundle Analyzer to inspect output and find heavy dependencies; enable via config or experimental flag (see Next.js docs for your version).
+
+## Examples
+
+### Commands
+
+```bash
+next dev
+next build
+next start
+```
+
+### Usage
+
+Run `next dev` for local development with Turbopack. Use the Bundle Analyzer (see Next.js docs) to optimize code-splitting and trim large dependencies. Prefer App Router and server components where possible.
+
+## Best Practices
+
+- Stay on a recent Next.js 16.x for stable Turbopack and caching behavior.
+- If dev is slow, ensure you're on Turbopack (default) and that the cache isn't being cleared unnecessarily.
+- For production bundle size issues, use the official Next.js bundle analysis tooling for your version.

.agents/skills/nextjs-turbopack/agents/openai.yaml

@@ -0,0 +1,7 @@
+interface:
+  display_name: "Next.js Turbopack"
+  short_description: "Next.js 16+ and Turbopack dev bundler"
+  brand_color: "#000000"
+  default_prompt: "Next.js dev, Turbopack, or bundle optimization"
+policy:
+  allow_implicit_invocation: true

.cursor/skills/bun-runtime/SKILL.md

@@ -0,0 +1,84 @@
+---
+name: bun-runtime
+description: Bun as runtime, package manager, bundler, and test runner. When to choose Bun vs Node, migration notes, and Vercel support.
+origin: ECC
+---
+
+# Bun Runtime
+
+Bun is a fast all-in-one JavaScript runtime and toolkit: runtime, package manager, bundler, and test runner.
+
+## When to Use
+
+- **Prefer Bun** for: new JS/TS projects, scripts where install/run speed matters, Vercel deployments with Bun runtime, and when you want a single toolchain (run + install + test + build).
+- **Prefer Node** for: maximum ecosystem compatibility, legacy tooling that assumes Node, or when a dependency has known Bun issues.
+
+Use when: adopting Bun, migrating from Node, writing or debugging Bun scripts/tests, or configuring Bun on Vercel or other platforms.
+
+## How It Works
+
+- **Runtime**: Drop-in Node-compatible runtime (built on JavaScriptCore, implemented in Zig).
+- **Package manager**: `bun install` is significantly faster than npm/yarn. Lockfile is `bun.lock` (text) by default in current Bun; older versions used `bun.lockb` (binary).
+- **Bundler**: Built-in bundler and transpiler for apps and libraries.
+- **Test runner**: Built-in `bun test` with Jest-like API.
+
+**Migration from Node**: Replace `node script.js` with `bun run script.js` or `bun script.js`. Run `bun install` in place of `npm install`; most packages work. Use `bun run` for npm scripts; `bun x` for npx-style one-off runs. Node built-ins are supported; prefer Bun APIs where they exist for better performance.
+
+**Vercel**: Set runtime to Bun in project settings. Build: `bun run build` or `bun build ./src/index.ts --outdir=dist`. Install: `bun install --frozen-lockfile` for reproducible deploys.
+
+## Examples
+
+### Run and install
+
+```bash
+# Install dependencies (creates/updates bun.lock or bun.lockb)
+bun install
+
+# Run a script or file
+bun run dev
+bun run src/index.ts
+bun src/index.ts
+```
+
+### Scripts and env
+
+```bash
+bun run --env-file=.env dev
+FOO=bar bun run script.ts
+```
+
+### Testing
+
+```bash
+bun test
+bun test --watch
+```
+
+```typescript
+// test/example.test.ts
+import { expect, test } from "bun:test";
+
+test("add", () => {
+  expect(1 + 2).toBe(3);
+});
+```
+
+### Runtime API
+
+```typescript
+const file = Bun.file("package.json");
+const json = await file.json();
+
+Bun.serve({
+  port: 3000,
+  fetch(req) {
+    return new Response("Hello");
+  },
+});
+```
+
+## Best Practices
+
+- Commit the lockfile (`bun.lock` or `bun.lockb`) for reproducible installs.
+- Prefer `bun run` for scripts. For TypeScript, Bun runs `.ts` natively.
+- Keep dependencies up to date; Bun and the ecosystem evolve quickly.

.cursor/skills/documentation-lookup/SKILL.md

@@ -0,0 +1,90 @@
+---
+name: documentation-lookup
+description: Use up-to-date library and framework docs via Context7 MCP instead of training data. Activates for setup questions, API references, code examples, or when the user names a framework (e.g. React, Next.js, Prisma).
+origin: ECC
+---
+
+# Documentation Lookup (Context7)
+
+When the user asks about libraries, frameworks, or APIs, fetch current documentation via the Context7 MCP (tools `resolve-library-id` and `query-docs`) instead of relying on training data.
+
+## Core Concepts
+
+- **Context7**: MCP server that exposes live documentation; use it instead of training data for libraries and APIs.
+- **resolve-library-id**: Returns Context7-compatible library IDs (e.g. `/vercel/next.js`) from a library name and query.
+- **query-docs**: Fetches documentation and code snippets for a given library ID and question. Always call resolve-library-id first to get a valid library ID.
+
+## When to use
+
+Activate when the user:
+
+- Asks setup or configuration questions (e.g. "How do I configure Next.js middleware?")
+- Requests code that depends on a library ("Write a Prisma query for...")
+- Needs API or reference information ("What are the Supabase auth methods?")
+- Mentions specific frameworks or libraries (React, Vue, Svelte, Express, Tailwind, Prisma, Supabase, etc.)
+
+Use this skill whenever the request depends on accurate, up-to-date behavior of a library, framework, or API. Applies across harnesses that have the Context7 MCP configured (e.g. Claude Code, Cursor, Codex).
+
+## How it works
+
+### Step 1: Resolve the Library ID
+
+Call the **resolve-library-id** MCP tool with:
+
+- **libraryName**: The library or product name taken from the user's question (e.g. `Next.js`, `Prisma`, `Supabase`).
+- **query**: The user's full question. This improves relevance ranking of results.
+
+You must obtain a Context7-compatible library ID (format `/org/project` or `/org/project/version`) before querying docs. Do not call query-docs without a valid library ID from this step.
+
+### Step 2: Select the Best Match
+
+From the resolution results, choose one result using:
+
+- **Name match**: Prefer exact or closest match to what the user asked for.
+- **Benchmark score**: Higher scores indicate better documentation quality (100 is highest).
+- **Source reputation**: Prefer High or Medium reputation when available.
+- **Version**: If the user specified a version (e.g. "React 19", "Next.js 15"), prefer a version-specific library ID if listed (e.g. `/org/project/v1.2.0`).
+
+### Step 3: Fetch the Documentation
+
+Call the **query-docs** MCP tool with:
+
+- **libraryId**: The selected Context7 library ID from Step 2 (e.g. `/vercel/next.js`).
+- **query**: The user's specific question or task. Be specific to get relevant snippets.
+
+Limit: do not call query-docs (or resolve-library-id) more than 3 times per question. If the answer is unclear after 3 calls, state the uncertainty and use the best information you have rather than guessing.
+
+### Step 4: Use the Documentation
+
+- Answer the user's question using the fetched, current information.
+- Include relevant code examples from the docs when helpful.
+- Cite the library or version when it matters (e.g. "In Next.js 15...").
+
+## Examples
+
+### Example: Next.js middleware
+
+1. Call **resolve-library-id** with `libraryName: "Next.js"`, `query: "How do I set up Next.js middleware?"`.
+2. From results, pick the best match (e.g. `/vercel/next.js`) by name and benchmark score.
+3. Call **query-docs** with `libraryId: "/vercel/next.js"`, `query: "How do I set up Next.js middleware?"`.
+4. Use the returned snippets and text to answer; include a minimal `middleware.ts` example from the docs if relevant.
+
+### Example: Prisma query
+
+1. Call **resolve-library-id** with `libraryName: "Prisma"`, `query: "How do I query with relations?"`.
+2. Select the official Prisma library ID (e.g. `/prisma/prisma`).
+3. Call **query-docs** with that `libraryId` and the query.
+4. Return the Prisma Client pattern (e.g. `include` or `select`) with a short code snippet from the docs.
+
+### Example: Supabase auth methods
+
+1. Call **resolve-library-id** with `libraryName: "Supabase"`, `query: "What are the auth methods?"`.
+2. Pick the Supabase docs library ID.
+3. Call **query-docs**; summarize the auth methods and show minimal examples from the fetched docs.
+
+## Best Practices
+
+- **Be specific**: Use the user's full question as the query where possible for better relevance.
+- **Version awareness**: When users mention versions, use version-specific library IDs from the resolve step when available.
+- **Prefer official sources**: When multiple matches exist, prefer official or primary packages over community forks.
+- **No sensitive data**: Redact API keys, passwords, tokens, and other secrets from any query sent to Context7. Treat the user's question as potentially containing secrets before passing it to resolve-library-id or query-docs.

.cursor/skills/nextjs-turbopack/SKILL.md

@@ -0,0 +1,44 @@
+---
+name: nextjs-turbopack
+description: Next.js 16+ and Turbopack — incremental bundling, FS caching, dev speed, and when to use Turbopack vs webpack.
+origin: ECC
+---
+
+# Next.js and Turbopack
+
+Next.js 16+ uses Turbopack by default for local development: an incremental bundler written in Rust that significantly speeds up dev startup and hot updates.
+
+## When to Use
+
+- **Turbopack (default dev)**: Use for day-to-day development. Faster cold start and HMR, especially in large apps.
+- **Webpack (legacy dev)**: Use only if you hit a Turbopack bug or rely on a webpack-only plugin in dev. Disable with `--webpack` (or `--no-turbopack` depending on your Next.js version; check the docs for your release).
+- **Production**: Production build behavior (`next build`) may use Turbopack or webpack depending on Next.js version; check the official Next.js docs for your version.
+
+Use when: developing or debugging Next.js 16+ apps, diagnosing slow dev startup or HMR, or optimizing production bundles.
+
+## How It Works
+
+- **Turbopack**: Incremental bundler for Next.js dev. Uses file-system caching so restarts are much faster (e.g. 5–14x on large projects).
+- **Default in dev**: From Next.js 16, `next dev` runs with Turbopack unless disabled.
+- **File-system caching**: Restarts reuse previous work; cache is typically under `.next`; no extra config needed for basic use.
+- **Bundle Analyzer (Next.js 16.1+)**: Experimental Bundle Analyzer to inspect output and find heavy dependencies; enable via config or experimental flag (see Next.js docs for your version).
+
+## Examples
+
+### Commands
+
+```bash
+next dev
+next build
+next start
+```
+
+### Usage
+
+Run `next dev` for local development with Turbopack. Use the Bundle Analyzer (see Next.js docs) to optimize code-splitting and trim large dependencies. Prefer App Router and server components where possible.
+
+## Best Practices
+
+- Stay on a recent Next.js 16.x for stable Turbopack and caching behavior.
+- If dev is slow, ensure you're on Turbopack (default) and that the cache isn't being cleared unnecessarily.
+- For production bundle size issues, use the official Next.js bundle analysis tooling for your version.

agents/rust-reviewer.md

@@ -11,7 +11,8 @@ When invoked:
 1. Run `cargo check`, `cargo clippy -- -D warnings`, `cargo fmt --check`, and `cargo test` — if any fail, stop and report
 2. Run `git diff HEAD~1 -- '*.rs'` (or `git diff main...HEAD -- '*.rs'` for PR review) to see recent Rust file changes
 3. Focus on modified `.rs` files
-4. Begin review
+4. If the project has CI or merge requirements, note that review assumes a green CI and resolved merge conflicts where applicable; call out if the diff suggests otherwise.
+5. Begin review
 
 ## Review Priorities
 

rules/common/agents.md

@@ -15,6 +15,7 @@ Located in `~/.claude/agents/`:
 | e2e-runner | E2E testing | Critical user flows |
 | refactor-cleaner | Dead code cleanup | Code maintenance |
 | doc-updater | Documentation | Updating docs |
+| rust-reviewer | Rust code review | Rust projects |
 
 ## Immediate Agent Usage
 

skills/bun-runtime/SKILL.md

@@ -0,0 +1,84 @@
+---
+name: bun-runtime
+description: Bun as runtime, package manager, bundler, and test runner. When to choose Bun vs Node, migration notes, and Vercel support.
+origin: ECC
+---
+
+# Bun Runtime
+
+Bun is a fast all-in-one JavaScript runtime and toolkit: runtime, package manager, bundler, and test runner.
+
+## When to Use
+
+- **Prefer Bun** for: new JS/TS projects, scripts where install/run speed matters, Vercel deployments with Bun runtime, and when you want a single toolchain (run + install + test + build).
+- **Prefer Node** for: maximum ecosystem compatibility, legacy tooling that assumes Node, or when a dependency has known Bun issues.
+
+Use when: adopting Bun, migrating from Node, writing or debugging Bun scripts/tests, or configuring Bun on Vercel or other platforms.
+
+## How It Works
+
+- **Runtime**: Drop-in Node-compatible runtime (built on JavaScriptCore, implemented in Zig).
+- **Package manager**: `bun install` is significantly faster than npm/yarn. Lockfile is `bun.lock` (text) by default in current Bun; older versions used `bun.lockb` (binary).
+- **Bundler**: Built-in bundler and transpiler for apps and libraries.
+- **Test runner**: Built-in `bun test` with Jest-like API.
+
+**Migration from Node**: Replace `node script.js` with `bun run script.js` or `bun script.js`. Run `bun install` in place of `npm install`; most packages work. Use `bun run` for npm scripts; `bun x` for npx-style one-off runs. Node built-ins are supported; prefer Bun APIs where they exist for better performance.
+
+**Vercel**: Set runtime to Bun in project settings. Build: `bun run build` or `bun build ./src/index.ts --outdir=dist`. Install: `bun install --frozen-lockfile` for reproducible deploys.
+
+## Examples
+
+### Run and install
+
+```bash
+# Install dependencies (creates/updates bun.lock or bun.lockb)
+bun install
+
+# Run a script or file
+bun run dev
+bun run src/index.ts
+bun src/index.ts
+```
+
+### Scripts and env
+
+```bash
+bun run --env-file=.env dev
+FOO=bar bun run script.ts
+```
+
+### Testing
+
+```bash
+bun test
+bun test --watch
+```
+
+```typescript
+// test/example.test.ts
+import { expect, test } from "bun:test";
+
+test("add", () => {
+  expect(1 + 2).toBe(3);
+});
+```
+
+### Runtime API
+
+```typescript
+const file = Bun.file("package.json");
+const json = await file.json();
+
+Bun.serve({
+  port: 3000,
+  fetch(req) {
+    return new Response("Hello");
+  },
+});
+```
+
+## Best Practices
+
+- Commit the lockfile (`bun.lock` or `bun.lockb`) for reproducible installs.
+- Prefer `bun run` for scripts. For TypeScript, Bun runs `.ts` natively.
+- Keep dependencies up to date; Bun and the ecosystem evolve quickly.

skills/documentation-lookup/SKILL.md

@@ -0,0 +1,90 @@
+---
+name: documentation-lookup
+description: Use up-to-date library and framework docs via Context7 MCP instead of training data. Activates for setup questions, API references, code examples, or when the user names a framework (e.g. React, Next.js, Prisma).
+origin: ECC
+---
+
+# Documentation Lookup (Context7)
+
+When the user asks about libraries, frameworks, or APIs, fetch current documentation via the Context7 MCP (tools `resolve-library-id` and `query-docs`) instead of relying on training data.
+
+## Core Concepts
+
+- **Context7**: MCP server that exposes live documentation; use it instead of training data for libraries and APIs.
+- **resolve-library-id**: Returns Context7-compatible library IDs (e.g. `/vercel/next.js`) from a library name and query.
+- **query-docs**: Fetches documentation and code snippets for a given library ID and question. Always call resolve-library-id first to get a valid library ID.
+
+## When to use
+
+Activate when the user:
+
+- Asks setup or configuration questions (e.g. "How do I configure Next.js middleware?")
+- Requests code that depends on a library ("Write a Prisma query for...")
+- Needs API or reference information ("What are the Supabase auth methods?")
+- Mentions specific frameworks or libraries (React, Vue, Svelte, Express, Tailwind, Prisma, Supabase, etc.)
+
+Use this skill whenever the request depends on accurate, up-to-date behavior of a library, framework, or API. Applies across harnesses that have the Context7 MCP configured (e.g. Claude Code, Cursor, Codex).
+
+## How it works
+
+### Step 1: Resolve the Library ID
+
+Call the **resolve-library-id** MCP tool with:
+
+- **libraryName**: The library or product name taken from the user's question (e.g. `Next.js`, `Prisma`, `Supabase`).
+- **query**: The user's full question. This improves relevance ranking of results.
+
+You must obtain a Context7-compatible library ID (format `/org/project` or `/org/project/version`) before querying docs. Do not call query-docs without a valid library ID from this step.
+
+### Step 2: Select the Best Match
+
+From the resolution results, choose one result using:
+
+- **Name match**: Prefer exact or closest match to what the user asked for.
+- **Benchmark score**: Higher scores indicate better documentation quality (100 is highest).
+- **Source reputation**: Prefer High or Medium reputation when available.
+- **Version**: If the user specified a version (e.g. "React 19", "Next.js 15"), prefer a version-specific library ID if listed (e.g. `/org/project/v1.2.0`).
+
+### Step 3: Fetch the Documentation
+
+Call the **query-docs** MCP tool with:
+
+- **libraryId**: The selected Context7 library ID from Step 2 (e.g. `/vercel/next.js`).
+- **query**: The user's specific question or task. Be specific to get relevant snippets.
+
+Limit: do not call query-docs (or resolve-library-id) more than 3 times per question. If the answer is unclear after 3 calls, state the uncertainty and use the best information you have rather than guessing.
+
+### Step 4: Use the Documentation
+
+- Answer the user's question using the fetched, current information.
+- Include relevant code examples from the docs when helpful.
+- Cite the library or version when it matters (e.g. "In Next.js 15...").
+
+## Examples
+
+### Example: Next.js middleware
+
+1. Call **resolve-library-id** with `libraryName: "Next.js"`, `query: "How do I set up Next.js middleware?"`.
+2. From results, pick the best match (e.g. `/vercel/next.js`) by name and benchmark score.
+3. Call **query-docs** with `libraryId: "/vercel/next.js"`, `query: "How do I set up Next.js middleware?"`.
+4. Use the returned snippets and text to answer; include a minimal `middleware.ts` example from the docs if relevant.
+
+### Example: Prisma query
+
+1. Call **resolve-library-id** with `libraryName: "Prisma"`, `query: "How do I query with relations?"`.
+2. Select the official Prisma library ID (e.g. `/prisma/prisma`).
+3. Call **query-docs** with that `libraryId` and the query.
+4. Return the Prisma Client pattern (e.g. `include` or `select`) with a short code snippet from the docs.
+
+### Example: Supabase auth methods
+
+1. Call **resolve-library-id** with `libraryName: "Supabase"`, `query: "What are the auth methods?"`.
+2. Pick the Supabase docs library ID.
+3. Call **query-docs**; summarize the auth methods and show minimal examples from the fetched docs.
+
+## Best Practices
+
+- **Be specific**: Use the user's full question as the query where possible for better relevance.
+- **Version awareness**: When users mention versions, use version-specific library IDs from the resolve step when available.
+- **Prefer official sources**: When multiple matches exist, prefer official or primary packages over community forks.
+- **No sensitive data**: Redact API keys, passwords, tokens, and other secrets from any query sent to Context7. Treat the user's question as potentially containing secrets before passing it to resolve-library-id or query-docs.

skills/nextjs-turbopack/SKILL.md

@@ -0,0 +1,44 @@
+---
+name: nextjs-turbopack
+description: Next.js 16+ and Turbopack — incremental bundling, FS caching, dev speed, and when to use Turbopack vs webpack.
+origin: ECC
+---
+
+# Next.js and Turbopack
+
+Next.js 16+ uses Turbopack by default for local development: an incremental bundler written in Rust that significantly speeds up dev startup and hot updates.
+
+## When to Use
+
+- **Turbopack (default dev)**: Use for day-to-day development. Faster cold start and HMR, especially in large apps.
+- **Webpack (legacy dev)**: Use only if you hit a Turbopack bug or rely on a webpack-only plugin in dev. Disable with `--webpack` (or `--no-turbopack` depending on your Next.js version; check the docs for your release).
+- **Production**: Production build behavior (`next build`) may use Turbopack or webpack depending on Next.js version; check the official Next.js docs for your version.
+
+Use when: developing or debugging Next.js 16+ apps, diagnosing slow dev startup or HMR, or optimizing production bundles.
+
+## How It Works
+
+- **Turbopack**: Incremental bundler for Next.js dev. Uses file-system caching so restarts are much faster (e.g. 5–14x on large projects).
+- **Default in dev**: From Next.js 16, `next dev` runs with Turbopack unless disabled.
+- **File-system caching**: Restarts reuse previous work; cache is typically under `.next`; no extra config needed for basic use.
+- **Bundle Analyzer (Next.js 16.1+)**: Experimental Bundle Analyzer to inspect output and find heavy dependencies; enable via config or experimental flag (see Next.js docs for your version).
+
+## Examples
+
+### Commands
+
+```bash
+next dev
+next build
+next start
+```
+
+### Usage
+
+Run `next dev` for local development with Turbopack. Use the Bundle Analyzer (see Next.js docs) to optimize code-splitting and trim large dependencies. Prefer App Router and server components where possible.
+
+## Best Practices
+
+- Stay on a recent Next.js 16.x for stable Turbopack and caching behavior.
+- If dev is slow, ensure you're on Turbopack (default) and that the cache isn't being cleared unnecessarily.
+- For production bundle size issues, use the official Next.js bundle analysis tooling for your version.