Viewer manifest fields

Generated page. It is built from build/viewer-plugin.schema.json, the schema that build/scripts/validate-viewer-plugin.py checks every manifest against. SPEC.md section 2 is the normative text; where they differ, SPEC.md wins.

Manifest for a Poka viewer plugin (SPEC.md, interface version 1).

Fields

Field	Type	Required	Constraints	Meaning
`id`	string	yes	pattern `^poka-[a-z0-9]+(-viewer\|-viewer-[a-z0-9]+)?$\|^[a-z0-9]+(-[a-z0-9]+)*-viewer$`	Unique plugin id. Canonical form: poka-<name>-viewer.
`name`	string	yes	min length 1	Human-readable name, e.g. "Table Viewer".
`version`	string	yes	pattern `^[0-9]+\.[0-9]+\.[0-9]+$`	SemVer.
`kind`	`"viewer"`	yes		Must mark this as a viewer, never a parser.
`role`	`"viewer"`	yes		What the hosts read (extension_manifest.rs::is_viewer, gen_formats_json.py). Must agree with kind.
`file_extension`	`""`	yes		Always empty: a viewer follows a parser. The host routes any manifest with a file_extension as a parser.
`abi`	integer	no	min 1	Runtime ABI version this plugin targets.
`tags`	array of strings	no	unique items	Free-form labels, e.g. ["text", "diff"].
`wasm`	object	yes		The compiled WASI command module and its sandbox caps.
`wasm.path`	string	yes	min length 1	Wasm file name, co-located with plugin.json: a bare *.wasm name, no directory (checked by validate-viewer-plugin.py).
`wasm.sha256`	string	no	pattern `^([a-f0-9]{64})?$`	Optional content hash of the wasm; the host verifies it when present. Written by install-extensions.py --stamp-hashes.
`wasm.size`	integer	no	min 0	Optional wasm size in bytes.
`wasm.memory_mb`	integer	no	min 1; max 1024	Sandbox memory cap in MB; the host has a default when absent. A module that exceeds it is killed and reported.
`wasm.max_time_ms`	integer	no	min 1	Wall-clock cap for one render in milliseconds; the host has a default when absent. A module that exceeds it is killed and reported.