Docs: Sync examples/README + 003 README with live MiniWebApp AOT status

[PurHur]

Problem

Contributor-facing docs still describe 003-MiniWebApp AOT as blocked on #568 without reflecting harness reality:

Doc	Stale claim
examples/README.md run matrix	003-MiniWebApp AOT column: ❌ blocked (#454)
examples/003-MiniWebApp/README.md	Stage 4b/4c "blocked #568"; AOT row ❌ blocked
script/examples-aot-smoke.sh header	"003 stays skipped until #568"
script/deploy-smoke.sh	skip message cites closed #568 only
script/miniwebapp-gates.sh	"Next: #568" in focus lines

#568 / #752 — native link is green on harness (batch 50). #764 — execute returns exit 0 with empty stdout. Do not confuse with stdlib #748 (unlink()).

Goal

Single accurate AOT status narrative across examples docs, aligned with ROADMAP #78 and #676 gate ladder:

• VM ✅ (Reference app: MiniWebApp runtime green (lint 0, VM serve, routes) #539)
• AOT link ✅ (AOT: MiniWebApp phpc build --project native link fails on master (post-#568/#734) #752)
• AOT execute ❌ (AOT: MiniWebApp native binary CLI execute emits empty stdout (post-link) #764, tests Testing: MiniWebAppAotExecuteTest CLI smoke (#485, #676 step 2) #747 / Testing: MiniWebApp AOT binary CLI execute smoke (tracked in #747, blocked #764) #485)

Scope

• Update examples/README.md run matrix: VM ✅, AOT link ✅, AOT execute 📋 AOT: MiniWebApp native binary CLI execute emits empty stdout (post-link) #764
• Update examples/003-MiniWebApp/README.md gate ladder stages 4a–4e (DevEx: MiniWebApp CI gate ladder (lint → serve → AOT → web-smoke) #472, DevEx: miniwebapp-gates stage 4b2 — AOT CLI execute byte probe (#764) #773 4b2)
• Cross-link docs/capabilities-syntax.md (Docs: Regenerate capabilities-syntax AOT rows post-#568 #744)
• Optional: root README north-star paragraph (Docs: Rewrite README feature list to match current compiler (2026) #48)

Do not regenerate benchmark table here — #716 after #764 green.

Acceptance criteria

• No doc claims "AOT blocked AOT: Native user-class object model for phpc build --project #568" for link
• examples/README.md matches PhpcBuildProjectTest link pass + AOT: MiniWebApp native binary CLI execute emits empty stdout (post-link) #764 execute gap

grep -r 'blocked #568' examples/README.md examples/003-MiniWebApp/README.md | wc -l
# → 0 after PR

Dependencies

• DevEx: Retire #568 user-class blocker copy in PhpcBuild and tests #766 — PhpcBuild stderr copy
• AOT: MiniWebApp native binary CLI execute emits empty stdout (post-link) #764 — execute status for honest "partial" wording

Links

• Testing: Regenerate examples benchmark AOT row for 003 after #568 #716, Docs: Regenerate capabilities-syntax AOT rows post-#568 #744, DevEx: miniwebapp-gates stage 4b2 — AOT CLI execute byte probe (#764) #773, ROADMAP 🗺️ ROADMAP: Compile a small PHP web application (living document) #78

[PurHur]

Batch 50: Update 003 row — AOT link ✅ (#752); execute blocked (#764). Remove references to active #568 link blocker.

[PurHur]

Doc fix note (batch 51): Issue body referenced #748 for MiniWebApp link — #748 is stdlib unlink(), not AOT link.

Accurate status:

• VM ✅ (Reference app: MiniWebApp runtime green (lint 0, VM serve, routes) #539)
• AOT link ✅ (AOT: MiniWebApp phpc build --project native link fails on master (post-#568/#734) #752, AOT: Native user-class object model for phpc build --project #568 closed)
• AOT execute ❌ (AOT: MiniWebApp native binary CLI execute emits empty stdout (post-link) #764)
• Benchmark row Testing: Regenerate examples benchmark AOT row for 003 after #568 #716 stays n/a until execute green

New tracking: #773 (gates 4b2 probe), #773–#776 batch 51.