feat(ide): add fbuild ide MVP on stock Zed (#1076 Phase 1)

[zackees]

Phase 1 of the corrected #1076 plan: the fbuild ide MVP on stock Zed, built on the Phase 0 foundations (#1197).

What changed

• fbuild ide [project_dir] [-e <env>] [--no-launch] — startup lifecycle per the issue: parse platformio.ini and resolve the environment (explicit -e > persisted .fbuild/ide_state.json > default env), install declared deps through the daemon (POST /api/install-deps, new DaemonClient::install_deps helper), refresh compile_commands.json (ensure_compile_db(refresh=true)), emit .clangd + .zed/settings.json via the Phase 0 editor-neutral core, generate .zed/tasks.json, launch Zed.
• Task generation (merge-don't-clobber): fbuild owns only tasks whose label starts with "fbuild: " — Build, Build (clean), Deploy, Deploy + Monitor, Monitor, Reset, Select environment (runs fbuild ide select). User-authored tasks are preserved; regeneration is idempotent.
• fbuild ide select — numbered interactive environment picker (stderr prompt/stdin read, same pattern as fbuild sync; -e bypasses for non-interactive use), validates against platformio.ini, persists the choice, regenerates DB + configs.
• Zed launch — PATH first, then per-OS known install dirs; spawned detached. If Zed isn't installed: prints winget/brew/download guidance and exits success — config generation is the product, launch is convenience.
• CLI shape: Commands::Ide with a nested IdeAction::Select clap subcommand; fbuild <dir> ide arg-rewrite supported via KNOWN_SUBCOMMANDS.

Validation (local)

• soldr cargo test -p fbuild-cli → 225 passed (18 new module tests + 6 clap-shape tests)
• soldr cargo clippy --workspace --all-targets -- -D warnings → exit 0; fmt clean
• No test launches Zed or requires a daemon (pure fns + injectable seams); full bash test before merge

Part of #1076 (Phase 1). Phases 2–4 (daemon-served web panels, probe-rs DAP debug config, native-UI decision) remain on the meta.

🤖 Generated with Claude Code

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Review details

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📥 Commits

Reviewing files that changed from the base of the PR and between a0a6673 and 56add1b.

📒 Files selected for processing (9)

• agents/docs/commands-reference.md
• crates/fbuild-cli/src/cli/args.rs
• crates/fbuild-cli/src/cli/dispatch.rs
• crates/fbuild-cli/src/cli/ide.rs
• crates/fbuild-cli/src/cli/mod.rs
• crates/fbuild-cli/src/cli/tests.rs
• crates/fbuild-cli/src/daemon_client.rs
• crates/fbuild-cli/src/daemon_client/types.rs
• docs/reference/cli.md

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch feat/1076-phase1-fbuild-ide

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