feat: integrate framework files into monorepo under packages/mosaic/framework/

Moves all Mosaic framework runtime files from the separate bootstrap repo
into the monorepo as canonical source. The @mosaic/mosaic npm package now
ships the complete framework — bin scripts, runtime configs, tools, and
templates — enabling standalone installation via npm install.

Structure:
  packages/mosaic/framework/
  ├── bin/          28 CLI scripts (mosaic, mosaic-doctor, mosaic-sync-skills, etc.)
  ├── runtime/      Runtime adapters (claude, codex, opencode, pi, mcp)
  ├── tools/        Shell tooling (git, prdy, orchestrator, quality, etc.)
  ├── templates/    Agent and repo templates
  ├── defaults/     Default identity files (AGENTS.md, STANDARDS.md, SOUL.md, etc.)
  ├── install.sh    Legacy bash installer
  └── remote-install.sh  One-liner remote installer

Key files with Pi support and recent fixes:
- bin/mosaic: launch_pi() with skills-local loop
- bin/mosaic-doctor: --fix auto-wiring for all 4 harnesses
- bin/mosaic-sync-skills: Pi as 4th link target, symlink-aware find
- bin/mosaic-link-runtime-assets: Pi settings.json patching
- bin/mosaic-migrate-local-skills: Pi skill roots, symlink find
- runtime/pi/RUNTIME.md + mosaic-extension.ts

Package ships 251 framework files in the npm tarball (278KB compressed).

packages/mosaic/framework/tools/git/issue-create.sh

@@ -0,0 +1,139 @@
+#!/bin/bash
+# issue-create.sh - Create issues on Gitea or GitHub
+# Usage: issue-create.sh -t "Title" [-b "Body"] [-l "label1,label2"] [-m "milestone"]
+
+set -e
+
+SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+source "$SCRIPT_DIR/detect-platform.sh"
+
+# Default values
+TITLE=""
+BODY=""
+LABELS=""
+MILESTONE=""
+
+# get_remote_host and get_gitea_token are provided by detect-platform.sh
+
+gitea_issue_create_api() {
+    local host repo token url payload
+    host=$(get_remote_host) || {
+        echo "Error: could not determine remote host for API fallback" >&2
+        return 1
+    }
+    repo=$(get_repo_info) || {
+        echo "Error: could not determine repo owner/name for API fallback" >&2
+        return 1
+    }
+    token=$(get_gitea_token "$host") || {
+        echo "Error: Gitea token not found for API fallback (set GITEA_TOKEN or configure ~/.git-credentials)" >&2
+        return 1
+    }
+
+    if [[ -n "$LABELS" || -n "$MILESTONE" ]]; then
+        echo "Warning: API fallback currently applies title/body only; labels/milestone require authenticated tea setup." >&2
+    fi
+
+    payload=$(TITLE="$TITLE" BODY="$BODY" python3 - <<'PY'
+import json
+import os
+
+payload = {"title": os.environ["TITLE"]}
+body = os.environ.get("BODY", "")
+if body:
+    payload["body"] = body
+print(json.dumps(payload))
+PY
+)
+
+    url="https://${host}/api/v1/repos/${repo}/issues"
+    curl -fsS -X POST \
+      -H "Authorization: token ${token}" \
+      -H "Content-Type: application/json" \
+      -d "$payload" \
+      "$url"
+}
+
+usage() {
+    cat <<EOF
+Usage: $(basename "$0") [OPTIONS]
+
+Create an issue on the current repository (Gitea or GitHub).
+
+Options:
+    -t, --title TITLE       Issue title (required)
+    -b, --body BODY         Issue body/description
+    -l, --labels LABELS     Comma-separated labels (e.g., "bug,feature")
+    -m, --milestone NAME    Milestone name to assign
+    -h, --help              Show this help message
+
+Examples:
+    $(basename "$0") -t "Fix login bug" -l "bug,priority-high"
+    $(basename "$0") -t "Add dark mode" -b "Implement theme switching" -m "0.2.0"
+EOF
+    exit 1
+}
+
+# Parse arguments
+while [[ $# -gt 0 ]]; do
+    case $1 in
+        -t|--title)
+            TITLE="$2"
+            shift 2
+            ;;
+        -b|--body)
+            BODY="$2"
+            shift 2
+            ;;
+        -l|--labels)
+            LABELS="$2"
+            shift 2
+            ;;
+        -m|--milestone)
+            MILESTONE="$2"
+            shift 2
+            ;;
+        -h|--help)
+            usage
+            ;;
+        *)
+            echo "Unknown option: $1" >&2
+            usage
+            ;;
+    esac
+done
+
+if [[ -z "$TITLE" ]]; then
+    echo "Error: Title is required (-t)" >&2
+    usage
+fi
+
+PLATFORM=$(detect_platform)
+
+case "$PLATFORM" in
+    github)
+        CMD="gh issue create --title \"$TITLE\""
+        [[ -n "$BODY" ]] && CMD="$CMD --body \"$BODY\""
+        [[ -n "$LABELS" ]] && CMD="$CMD --label \"$LABELS\""
+        [[ -n "$MILESTONE" ]] && CMD="$CMD --milestone \"$MILESTONE\""
+        eval "$CMD"
+        ;;
+    gitea)
+        if command -v tea >/dev/null 2>&1; then
+            CMD="tea issue create --title \"$TITLE\""
+            [[ -n "$BODY" ]] && CMD="$CMD --description \"$BODY\""
+            [[ -n "$LABELS" ]] && CMD="$CMD --labels \"$LABELS\""
+            # tea accepts milestone by name directly (verified 2026-02-05)
+            [[ -n "$MILESTONE" ]] && CMD="$CMD --milestone \"$MILESTONE\""
+            if eval "$CMD"; then
+                exit 0
+            fi
+            echo "Warning: tea issue create failed, trying Gitea API fallback..." >&2
+        fi
+        gitea_issue_create_api
+        ;;
+    *)
+        echo "Error: Could not detect git platform" >&2
+        exit 1
+        ;;
+esac