CI: examples-aot-smoke 003 — probe link then execute bytes (#764, not #568 skip)

[PurHur]

Problem

script/examples-aot-smoke.sh still short-circuits the 003 block with a #568 link skip message even though #752 ✅ closed native user-class link.

Operators running make examples-aot-smoke or EXAMPLES_AOT_SMOKE_ONLY=003 get no signal about execute health (empty stdout — #764). #738 tracks full unskip when execute is green; this issue covers the intermediate behavior: attempt build + run, report accurate blocker.

Goal

When LLVM is ready:

1. phpc build --project examples/003-MiniWebApp — fail with stderr on link error (exit 1)
2. Run .phpc/bin/app with QUERY_STRING=route=home CGI env
3. If stdout length 0: print blocked #764 (empty stdout) and skip (exit 0) or fail when MINIWEBAPP_AOT_EXECUTE_GATE=1
4. If stdout contains app_name: print 003-MiniWebApp: ok

Remove hard-coded skip (AOT link blocked #568) stub.

Scope

• script/examples-aot-smoke.sh — smoke_003_miniwebapp() rewrite
• test/unit/ExamplesAotSmokeScriptTest.php — assert new messages
• script/miniwebapp-gates.sh stage 4c inherits accurate pass/skip/fail (DevEx: miniwebapp-gates stage 4c — probe examples-aot-smoke 003 block #683)
• Cross-link DevEx: Retire #568 user-class blocker copy in PhpcBuild and tests #766 / CI: check-stale-issue-refs.sh — fail inventory on closed blocker strings (#568) #802 for user-facing copy elsewhere

Implementation hints

Piece	Notes
Env	Reuse needles from #491 / #747 (app_name)
Helper	Share with #790 MiniWebAppCgiEnv when landed
Byte probe	Same as #773 stage 4b2

make docker-build-22
EXAMPLES_AOT_SMOKE_ONLY=003 ./script/examples-aot-smoke.sh
# expect: stderr mentions #764 while execute broken, not #568

Acceptance criteria

• With link green + empty stdout: skip/fail cites AOT: MiniWebApp native binary CLI execute emits empty stdout (post-link) #764, not AOT: Native user-class object model for phpc build --project #568
• With execute green: examples-aot-smoke: 003-MiniWebApp: ok
• ExamplesAotSmokeScriptTest passes locally/Docker

Dependencies

• AOT: MiniWebApp phpc build --project native link fails on master (post-#568/#734) #752 ✅ link
• AOT: MiniWebApp native binary CLI execute emits empty stdout (post-link) #764 — execute blocker until green
• Testing: Enable examples-aot-smoke.sh 003-MiniWebApp slice (#676 step 3) #738 — full green path + README Testing: Regenerate examples benchmark AOT row for 003 after #568 #716 regen
• Testing: Extract MiniWebAppCgiEnv trait for VM/AOT/shell smokes #790 — optional env helper

Verification

docker run --rm -v "$(pwd):/compiler" -w /compiler php-compiler:22.04-dev \
  EXAMPLES_AOT_SMOKE_ONLY=003 ./script/examples-aot-smoke.sh

Local/Docker only — not GitHub Actions.

Links

• Testing: Enable examples-aot-smoke.sh 003-MiniWebApp slice (#676 step 3) #738, DevEx: miniwebapp-gates stage 4c — probe examples-aot-smoke 003 block #683, Testing: MiniWebApp AOT unskip matrix after #568 (orchestrate #454 #485 #478 #610) #676 step 3, ROADMAP 🗺️ ROADMAP: Compile a small PHP web application (living document) #78

[PurHur]

Batch 59: Implementation tracked in #881 (retarget script/examples-aot-smoke.sh 003: link probe + execute byte count, remove #568 strings). This issue remains the policy tracker; #881 is the script change.

Blocker: execute bytes = 0 → #764 (link is green per #752 / #754).