feat: redesign bundle command — self-contained serve-ready ZIP

New bundle structure:
  manifest.json     — metadata (version, counts, git SHA, bundle format 2)
  serve.sh          — Linux/Mac startup script (auto-downloads JAR from Maven Central)
  serve.bat         — Windows startup script
  graph.db/         — Neo4j embedded database (from .osscodeiq/graph.db)
  cache/            — H2 analysis cache (from .code-intelligence)
  source/           — codebase files (via git ls-files, optional --no-source)
  flow.html         — interactive architecture diagram (if FlowEngine available)
  code-iq-*-cli.jar — CLI JAR (optional --include-jar)

Pipeline: index → enrich → bundle → (transfer) → extract → serve.sh

serve.sh reads version from manifest, downloads CLI JAR from Maven Central
if not bundled (SNAPSHOT versions require --include-jar), runs serve with
correct --graph and source paths.

Options: --include-jar, --no-source, --graph, --tag, --output
Skips Neo4j lock files. Progress logging. Reports bundle size.

E2E tested: petclinic index→enrich→bundle→extract→serve→query all working.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: aksOps