`invoke_callee_sees_incremented_depth` asserted NOTHING — it ended `let _ = resp`
with a comment that `ctx.trigger_depth` wasn't exposed, so it would have passed
even if `invoke` forwarded the depth unchanged, i.e. never incrementing the
chain-depth counter that bounds runaway trigger loops.
`build_ctx_map` now surfaces `ctx.trigger_depth` (read-only: 0 for direct ingress,
+1 per synchronous `invoke` re-entry or dispatched handler) — the value the
author intended to read and a legitimate diagnostic for a script. The test now
pins the increment: the caller is depth 0, the invoke callee must see 1.
Mutation-verified: forwarding the depth unchanged makes the callee see 0 and the
test fails.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
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