[1bye]

Adds experimental native hot reload through rake dev --live. The Rust supervisor
drives the Blaze daemon; Rake polls on a 16 ms UI timer, redraws applied patches,
and uses checkpointed restarts when layouts change or the patch area fills.
Plain rake dev stays on Cargo. Native restarts proceed by default with a notice
for missing state; --require-state keeps the old process when state is unavailable.

Run it

rake new hello
cd hello
rake dev --live

Apple Silicon macOS only. Live mode downloads and verifies the pinned
1bye/blaze v0.20261030.1-rake.1 bundle; no global Blaze install is needed.
The generated manifest exposes live, devtools and gpui-fast aliases so a
fresh Cargo lock includes optional dependencies and compatible Taffy versions.
Only live/devtools are enabled for the live build; the alternate backend stays off.
For local review, use rake new hello --rake-path /path/to/rake/crates/rake.

The pinned fork bundle carries these engine fixes:

• WASI realpath within the macro package sandbox.
• Cross-file span_join returns None.
• blaze.std:: symbol prefix and standard-library cache-key bump.
• module_path! expansion in symbol attributes.
• Canonical CARGO path in macro sandboxes.
• Real rustc for build-script probes.
• Missing AArch64 NEON intrinsic lowering.

The fixed matching macro server is bundled. Hybrid native-macro settings, the
64 MiB stack, pf-no-simd through rake/live, and binary-only builds are automatic.

Measurements

Clean install from the GitHub release, app behind the editor, medians of six trials:

Edit	Save → apply	Save → redraw
view! text	0.885 s	1.063 s
Helper	0.438 s	0.675 s

• App trial: all 13 examples were run, plus a scratch app using 13 common crates (image, tokio, reqwest, bundled rusqlite, sha2, regex and others).
  • 12 build and 11 start, with zero Blaze refusals.
  • The scratch app's outputs exactly match Cargo's.
  • Text edits take 0.6–0.9 s in small apps and 2–3.6 s in larger ones; helper edits take 0.3–0.9 s.
• Restarts: a field change restarts in 3.6–5.8 s.
• Cold build: 2–4 minutes.
• Idle CPU: 0.07% of one core.

Limits

• Only registered checkpoints are restored; other fields reset with a notice.
• Older/custom apps may need the feature aliases documented in docs/development.md.
  The pinned engine can plan inactive dependencies absent from Cargo's lockfile.
• Larger macro bodies can still take seconds to reload. Edited static initializers reset.
• One earlier router remount at edit 30 remains unexplained; later soaks did not reproduce it.
• First full restarts can be slow (55 s in an earlier larger fixture).
• gpu-surface --features fast panics at startup: Blaze links the window classes of both GPUI backends. inspector fails under Cargo too, because of its manifest.
• Live mode runs the bare executable without app bundle resources, so foundation reports its update status differently from Cargo.
• With --require-state, a blocked app keeps getting Restart, even after the field is reverted. Restart it yourself.
• Linux and Intel Mac live mode are not supported. CI tests use fake engines; no
  real Blaze build is required in CI.

Validation

• Rebased onto current main 8ba48c2c; frame polling is folded into the UI-timer fix.
• 998 workspace tests; 6 live-runtime tests; 15 supervisor tests;
  4 installer tests, including wrong checksums and tampering.
• CI-style fmt, workspace Clippy, live-feature Clippy and spacing checks.
• Fresh generated app: live text/helper edits, field restart with a visible notice,
  patch after restart, and plain Cargo dev.
• Published-bundle View/Notes smoke edits; unseeded scaffold builds natively and for Wasm.

Details: .agents/reports/pr53-mergeable.md.

🤖 Generated with Claude Code