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• --global flag: indxr init --global installs MCP config and rules into user-level directories so indxr is available for all projects without per-project setup
• Claude Code: ~/.claude.json (MCP merge) + ~/.claude/CLAUDE.md (append)
• Cursor: ~/.cursor/mcp.json (MCP merge)
• Windsurf: ~/.codeium/windsurf/mcp_config.json (MCP merge) + ~/.codeium/windsurf/memories/global_rules.md (append)
• Modern rules format: Migrates deprecated .cursorrules → .cursor/rules/indxr.mdc and .windsurfrules → .windsurf/rules/indxr.md with proper frontmatter
• Safe MCP merge: Reads existing JSON, adds/updates only the indxr server entry, preserves all other servers and fields
• 36 init tests (16 new), all 308 tests passing, clippy clean

Test plan

• cargo test init::tests — all 36 tests pass
• indxr init --cursor creates .cursor/rules/indxr.mdc (not .cursorrules)
• indxr init --windsurf creates .windsurf/rules/indxr.md (not .windsurfrules)
• indxr init --global --cursor merges into ~/.cursor/mcp.json
• indxr init --global with existing MCP config preserves other servers
• indxr init --help shows --global flag

• Workspace detection for Cargo ([workspace].members), npm ("workspaces"), and Go (go.work) with automatic glob expansion and member name resolution
• New WorkspaceIndex data model wrapping per-member CodebaseIndex instances — non-workspace projects flow through the same path as a single-member workspace (zero branching)
• All 22 MCP tools updated to accept an optional member param for scoping; cross-member tools search transparently, path-specific tools auto-resolve the member
• New list_workspace_members tool (23 total) and CLI additions: indxr members, --member, --no-workspace
• Workspace-aware serve, watch, HTTP transport, INDEX.md generation, and auto-reindex

Test plan

• cargo fmt — clean
• cargo clippy --all-features — clean
• cargo test — 278 tests pass (14 new workspace tests)
• cargo test --all-features — 301 tests pass (includes HTTP transport tests)
• Manual: indxr members on a Cargo workspace, npm monorepo, and Go workspace
• Manual: indxr serve on a monorepo, verify list_workspace_members and member-scoped tool calls
• Manual: indxr serve --no-workspace on a monorepo, verify single-root behavior

• Implements MCP Streamable HTTP transport (spec 2025-03-26) alongside the existing stdio transport, enabling multi-client scenarios via indxr serve --http :8080
• Feature-gated behind --features http (axum, tokio, etc.) to keep the default binary lean — no bloat for stdio-only users
• Extracts a transport-agnostic process_jsonrpc_message() handler from the existing code, shared by both stdio and HTTP transports

HTTP Transport Details

• Single /mcp endpoint: POST for JSON-RPC requests, GET for SSE notification stream, DELETE for session termination
• Full session enforcement via Mcp-Session-Id header (assigned on initialize, required for all subsequent requests)
• File watcher integration (--watch) broadcasts change notifications to all connected SSE clients
• RwLock-based shared state for concurrent multi-client access
• Sync-to-async bridge via spawn_blocking — all existing tool execution stays synchronous

Files Changed

Test plan

• cargo test — 264 tests pass (no regression, no http feature)
• cargo test --features http — 272 tests pass (+14 new tests)
• cargo check and cargo check --features http both compile cleanly
• Manual: cargo run --features http -- serve --http :8080 --watch + curl requests