feat(tea): INT-07 host-side TEA runtime + run loop (Refs #182)

[hyperpolymath]

INT-07 — host-side TEA runtime + run loop (#182)

lib/tea_bridge.ml defines the TEA runtime ABI, but the
affinescript-tea satellite never existed (the "first slice
scaffolded" claim was aspirational, same pattern as the dom.as stub).

Landed — affinescript-tea/

• parseTeaLayout() — decodes the affinescript.tea_layout custom section (binary format matched to Tea_bridge.build_tea_layout_section). The runtime is generic over the model, not hard-coded to the demo TitleModel.
• TeaApp — load/init/dispatch/model/setScreen/run. Reuses the INT-02 host-agnostic loader (Deno/Node/browser) + ownership accessor; model() is layout-driven.
• run({messages, view}) — generic run loop over any (async) iterable of i32 msgs; view(model) after init and each dispatch.
• Linear-msg invariant enforced host-side: affinescript_update invoked exactly once per dispatch, non-re-entrant — a synchronous host-callback re-entry throws (a second message inside one cycle would violate the linearity affinescript.ownership asserts).

Verification

affinescript-tea/mod_test.js — 9 Deno tests driving the canonical affinescript tea-bridge module (layout, ownership=Linear msg, init/update arithmetic, setScreen, run loop, non-integer reject, no false lockout) plus a hand-built importing fixture that genuinely exercises the re-entrancy guard. All green. dune test --force 278/278 (no compiler change; zero regression).

INT-01 dependency cleared (#253 merged). Router/navigation runtime is the separate INT-09 (lib/tea_router.ml), out of scope.

Refs #182. Not Closes — owner closes per ISSUE-CLOSURE.

🤖 Generated with Claude Code

[github-actions]

🔍 Hypatia Security Scan

Findings: 44 issues detected

Severity	Count
🔴 Critical	12
🟠 High	21
🟡 Medium	11

⚠️ Action Required: Critical security issues found!

View findings

[
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