feat(mcp): rename server to "CODE MCP" + ship project-scoped .mcp.json

[aksOps]

Summary

• Renames the MCP protocol-level server name from codeiq → CODE MCP so clients see a distinctive identifier separate from the project/CLI name.
• Adds project-scoped .mcp.json at the repo root: cloning + opening in Claude Code auto-registers the server.
• Documents the user-scope registration command (claude mcp add --scope user code-mcp -t http http://localhost:8080/mcp) for cross-project use.

No backend behavior change. Auth defaults unchanged — mode=none + allow_unauthenticated=true has been the default since v0.2.0 / PR #112, so the server is already discoverable on a fresh codeiq serve.

Diff

File	Change
src/main/resources/application.yml	spring.ai.mcp.server.name: codeiq → "CODE MCP"
.mcp.json (new)	{"mcpServers":{"code-mcp":{"type":"http","url":"http://localhost:8080/mcp"}}}
README.md	New ### Use with Claude Code (MCP) subsection with claude mcp add command
CLAUDE.md	One-line note under MCP Tools section about the new server-name string

Verification

Built target/code-iq-0.1.0-SNAPSHOT-cli.jar from this branch, ran codeiq serve on port 18888, posted a JSON-RPC initialize to /mcp:

STATUS: 200
serverInfo.name = "CODE MCP"
PASS: rename took effect

Out of scope (surfaced)

• 9 pre-existing test failures in McpToolsExpandedTest (*ShouldReturnErrorWhenNoData cases — Jackson deserializing array as map) reproduce on origin/main without these changes. Not introduced by this PR; needs a follow-up.

Test plan

• Build green on CI (modulo the pre-existing McpToolsExpandedTest failures noted above)
• codeiq serve returns serverInfo.name == "CODE MCP" on /mcp initialize
• Cloning this branch into a fresh CC session auto-registers code-mcp from .mcp.json

🤖 Generated with Claude Code

[aksOps]

Closing — the Go port (PR #130) renames the MCP server to 'CODE MCP' (mcp.ServerOptions.Name = "CODE MCP" in go/internal/cli/mcp.go) and the Phase 6 cutover (PR #132) deleted src/main/resources/application.yml and rewrote CLAUDE.md + README.md. The original change has been superseded.

.mcp.json at the repo root is now an agent-specific concern; users wire it locally pointing at the codeiq binary.