fix(gc): compiled programs never GC'd on nursery pressure (P0) + copied-minor weak-slot semantics

CHANGELOG.md

@@ -1,3 +1,9 @@
+## v0.5.1236 — P0: compiled programs never GC'd on nursery pressure; copied-minor weak-slot semantics
+
+**P0.** Since the budgeted-GC slicing (897f50c8b, 2026-05-30), `gc_check_trigger` routed ArenaBytes/MallocCount pressure exclusively through the budgeted mutator-assist stepper — which `registered_root_scanners_block_budgeted_gc` permanently blocks in every compiled program (codegen registers synchronous-only root scanners at startup). The stepper never started, the assist step no-op'd, and allocation pressure accumulated forever: a 4M-small-allocation probe ran ZERO collection cycles and grew to 1.93 GB RSS. #5476 had patched the identical hole for the OldReclaim trigger only. Fix mirrors that arm: when a nursery-churn trigger is due and the budgeted machinery is structurally unavailable, run the direct synchronous minor under `force_full_scan` (conservative retention at the allocation point; copied-minor ineligible for that cycle, so the non-moving minor runs). After: 14 cycles, 539 MB RSS. New compiled-binary e2e (`gc_nursery_trigger_compiled`) pins the contract.
+
+**Copied-minor weak slots.** The scan evacuated THROUGH weak target slots (WeakRef referent / WeakMap-WeakSet entry key / FinalizationRegistry record target) — strengthening the weak edge — and the fast path bypasses the WeakProcessing subphase, so nothing ever tombstoned. The scan now records weak slots without evacuating, repairs forwarded targets after the final drain, and runs `process_weak_targets_after_mark` before the from-space flip, gated on a weak-holder latch so weak-free programs skip the arena walk. Three unit tests with a negative control.
+
 ## v0.5.1235 — renamed colliding classes: static calls + static field get/set resolve `class_renames`
 
 Follow-up to v0.5.1230's capture-snapshot work, fixing its own acceptance test (`same_class_name_across_factories_keeps_snapshots_separate`, red on main — invisible to PR CI per the #5960 blind spot): a body-local `class X` colliding with an outer/prior `class X` registers under a scope-local rename, and bare-ident references + `new X()` already resolve it — but the static-method-call arm (Ident + #private) and the static-field get/set arms looked up the raw name, binding the FIRST same-named registrant. Factory B's `e.who()` dispatched to factory A's static and read A's snapshot. All four arms now resolve the rename before the class lookups; imports keep the raw name. Adds `renamed_class_statics_dispatch_to_renamed_registrant` (statics + construction across two factories); full class/static/capture/5437/w6 e2e sweep green.

CLAUDE.md

@@ -8,7 +8,7 @@ This file provides guidance to Claude Code (claude.ai/code) when working with co
 
 Perry is a native TypeScript compiler written in Rust that compiles TypeScript source code directly to native executables. It uses SWC for TypeScript parsing and LLVM for code generation.
 
-**Current Version:** 0.5.1235
+**Current Version:** 0.5.1236
 
 
 ## TypeScript Parity Status