`ManifestScript`, `ManifestRoute`, and every trigger spec
(`KvTriggerSpec`…`QueueTriggerSpec`) lacked `#[serde(deny_unknown_fields)]`,
while their parent structs all had it. So a typo inside a `[[triggers.kv]]` /
`[[routes]]` / `[[scripts]]` entry (e.g. `collection` for `collection_glob`,
`methid` for `method`) was silently dropped instead of erroring — the manifest
applied with the mistyped directive missing. Add the attribute to the 9 entry
structs (all fields are exhaustive, so `pull`-emitted TOML still round-trips —
verified against the full journey suite, 151/151). Pinned by a new
`unknown_key_in_an_entry_spec_is_rejected` unit test.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
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