chore: add issue/PR templates, label manifest, and label sync script

.github/ISSUE_TEMPLATE/agent_skill_request.yml

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+name: 🤖 Agent / Skill Request
+description: Propose a new subagent or skill to bundle
+title: "agent: "
+labels: ["🤖 Agent", "🔍 Triage"]
+body:
+  - type: dropdown
+    id: kind
+    attributes:
+      label: Type
+      options:
+        - Agent (under `agents/`)
+        - Skill (under `skills/<name>/SKILL.md`)
+    validations:
+      required: true
+
+  - type: input
+    id: name
+    attributes:
+      label: Proposed name
+      placeholder: e.g. terraform-reviewer / accessibility-auditor
+    validations:
+      required: true
+
+  - type: textarea
+    id: description
+    attributes:
+      label: Description
+      description: One-paragraph summary for the frontmatter.
+    validations:
+      required: true
+
+  - type: textarea
+    id: when-to-use
+    attributes:
+      label: When to use it
+      description: Specific, actionable trigger conditions.
+    validations:
+      required: true
+
+  - type: textarea
+    id: gap
+    attributes:
+      label: Why isn't this covered by an existing one?
+      description: Link the closest existing agent/skill and explain the gap.

.github/ISSUE_TEMPLATE/bug_report.yml

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+name: 🐞 Bug Report
+description: Something is broken — agent fails, hook misbehaves, install errors, etc.
+title: "bug: "
+labels: ["🐞 Bug", "🔍 Triage"]
+body:
+  - type: textarea
+    id: what-happened
+    attributes:
+      label: What happened?
+      description: Include reproduction steps if possible.
+      placeholder: |
+        1. Run `./install.sh`
+        2. Invoke `/egc-plan ...`
+        3. See error
+    validations:
+      required: true
+
+  - type: dropdown
+    id: environment
+    attributes:
+      label: Environment
+      multiple: true
+      options:
+        - Gemini CLI
+        - Antigravity
+        - npm package
+        - Other
+    validations:
+      required: true
+
+  - type: input
+    id: version
+    attributes:
+      label: OS / Version
+      placeholder: macOS 14.5 / v1.3.6
+    validations:
+      required: true
+
+  - type: textarea
+    id: logs
+    attributes:
+      label: Logs (optional)
+      render: shell

.github/ISSUE_TEMPLATE/config.yml

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+blank_issues_enabled: false
+contact_links:
+  - name: 💬 Discussions
+    url: https://github.com/Jamkris/everything-gemini-code/discussions
+    about: Questions, ideas, "is this the right pattern?", show and tell
+  - name: 📖 Documentation
+    url: https://github.com/Jamkris/everything-gemini-code/tree/main/docs
+    about: Multilingual docs (en / ko-KR / zh-CN)

.github/ISSUE_TEMPLATE/feature_request.yml

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+name: ✨ Feature Request
+description: Suggest a new feature, command, hook, or integration
+title: "feat: "
+labels: ["✨ Feature", "🔍 Triage"]
+body:
+  - type: textarea
+    id: problem
+    attributes:
+      label: Problem
+      description: What are you trying to do that the current bundle doesn't support?
+    validations:
+      required: true
+
+  - type: textarea
+    id: proposal
+    attributes:
+      label: Proposed solution
+    validations:
+      required: true
+
+  - type: dropdown
+    id: scope
+    attributes:
+      label: Scope
+      multiple: true
+      options:
+        - Agent
+        - Skill
+        - Slash command
+        - Hook
+        - Install / packaging
+        - Docs
+        - Other

.github/PULL_REQUEST_TEMPLATE.md

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+## Summary
+
+<!-- One or two sentences. What changed and why. -->
+
+## Type
+
+<!-- Check one or more -->
+
+- [ ] feat — new agent / skill / command / hook
+- [ ] fix — bug fix
+- [ ] refactor — non-behavioral cleanup
+- [ ] docs — documentation only
+- [ ] chore — tooling, CI, dependency bumps
+- [ ] breaking — changes a command name, agent tool list, or hook contract
+
+## Test plan
+
+<!-- How did you verify this? Check what you ran. -->
+
+- [ ] `npm run lint` clean
+- [ ] `npm test` passes
+- [ ] `node scripts/ci/validate-agents.js` passes (if touching `agents/`)
+- [ ] `node scripts/ci/validate-commands.js` passes (if touching `commands/`)
+- [ ] Manual smoke test in Gemini CLI / Antigravity (describe below)
+
+<!-- Describe any manual testing here. -->
+
+## Related
+
+<!-- Closes #N, refs #N, links to discussion. Delete if none. -->

.github/labels.yml

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+# --- Type ---------------------------------------------------------------
+- name: 🐞 Bug
+  color: d73a4a
+  description: Something isn't working
+- name: ✨ Feature
+  color: a2eeef
+  description: New feature or improvement request
+- name: 🔨 Refactor
+  color: f29a4e
+  description: Code refactoring with no behavior change
+- name: 📃 Docs
+  color: 1D76DB
+  description: Documentation changes (README, docs/)
+- name: ✅ Test
+  color: ccffc4
+  description: Test additions or fixes (tests/, fixtures)
+- name: ⚙ Setting
+  color: e3dede
+  description: Tooling, CI, dependencies, build setup
+- name: 🌏 Release
+  color: C2E0C6
+  description: Release, packaging, publish
+- name: 🙋‍♂️ Question
+  color: 9ED447
+  description: Further information is requested
+
+# --- Area ---------------------------------------------------------------
+- name: 🤖 Agent
+  color: 7057ff
+  description: Changes under agents/ (subagent definitions)
+- name: 🧠 Skill
+  color: 0e8a16
+  description: Changes under skills/ (SKILL.md)
+- name: ⌨ Command
+  color: D4C5F9
+  description: Changes under commands/ (egc-* slash commands)
+- name: 🪝 Hook
+  color: e99695
+  description: Changes under hooks/ or scripts/hooks/
+- name: 📚 Rules
+  color: C5DEF5
+  description: Changes under rules/ (shipped to user ~/.gemini/rules/)
+- name: 📦 Install
+  color: FEF2C0
+  description: install.sh / install.ps1 / npm packaging
+
+# --- Severity / nature --------------------------------------------------
+- name: 🛡 Security
+  color: b60205
+  description: Security-relevant change or vulnerability
+- name: 💥 Breaking
+  color: d93f0b
+  description: Breaks command names, tool lists, or hook contracts
+
+# --- Triage / flow ------------------------------------------------------
+- name: 🔍 Triage
+  color: ededed
+  description: Awaiting maintainer triage
+- name: 🌱 Good First Issue
+  color: 7057ff
+  description: Approachable for first-time contributors
+- name: 🤝 Help Wanted
+  color: 008672
+  description: Maintainer would like community help on this
+- name: 🌀 Duplicate
+  color: cccccc
+  description: Already tracked elsewhere
+- name: 🚫 Wontfix
+  color: ffffff
+  description: Out of scope or intentionally not addressed

scripts/setup-labels.sh

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+#!/usr/bin/env bash
+# Sync GitHub labels from .github/labels.yml.
+#
+# Idempotent: re-running updates color/description on existing labels.
+# Requires `gh` CLI and `python3` (used to parse the YAML).
+
+set -euo pipefail
+
+ROOT="$(cd "$(dirname "$0")/.." && pwd)"
+LABELS_FILE="$ROOT/.github/labels.yml"
+
+if [ ! -f "$LABELS_FILE" ]; then
+  echo "Labels manifest not found at $LABELS_FILE" >&2
+  exit 1
+fi
+
+if ! command -v gh >/dev/null 2>&1; then
+  echo "gh CLI not installed. See https://cli.github.com/" >&2
+  exit 1
+fi
+
+if ! command -v python3 >/dev/null 2>&1; then
+  echo "python3 not found. Please install Python 3." >&2
+  exit 1
+fi
+
+# Parse YAML into TSV rows (name<TAB>color<TAB>description) via python.
+python3 - "$LABELS_FILE" <<'PY' | while IFS=$'\t' read -r name color description; do
+import sys, re
+
+path = sys.argv[1]
+with open(path, encoding='utf-8') as f:
+    src = f.read()
+
+entries = []
+current = None
+for line in src.splitlines():
+    if line.startswith('#') or not line.strip():
+        continue
+    m = re.match(r'^- name:\s*(.+?)\s*$', line)
+    if m:
+        if current:
+            entries.append(current)
+        current = {'name': m.group(1), 'color': '', 'description': ''}
+        continue
+    m = re.match(r'^\s+color:\s*(.+?)\s*$', line)
+    if m and current is not None:
+        current['color'] = m.group(1)
+        continue
+    m = re.match(r'^\s+description:\s*(.+?)\s*$', line)
+    if m and current is not None:
+        current['description'] = m.group(1)
+if current:
+    entries.append(current)
+
+for e in entries:
+    print(f"{e['name']}\t{e['color']}\t{e['description']}")
+PY
+  echo "Syncing label: $name"
+  gh label create "$name" --color "$color" --description "$description" --force >/dev/null
+done
+
+echo "Done."