extend API

Symbol table for sova_core::extend — what it is and who uses it.

Author guide — edit docs/.vitepress/plugin-sdk-guides/extend-api.md, then pnpm docs:generate.

Authoritative import path for plugin crates: sova_core::extend::… (facade re-exports many names as sova::extend when using the sova crate).

Always-on plugin surface

Symbol	Role	Used in-tree
PluginMeta, PLUGIN_SDK_VERSION, PluginSdkVersion, check_plugin_sdk, SdkCompat, InstalledPlugin	Identity / SDK	nearly all plugins
named	Label MW	cookies, session, csrf, cors, shield, …
with_leaked	'static config MW	cors, shield, compress
MwEntry, IntoMwEntry, IntoMiddleware, Middleware	Composable MW	auth, passport, db tx, rate-limit
BoxFuture	Async plugin internals	session, http, tasks, …
parse_duration, parse_bytes	Human config	session, static, http, tasks
StateMap	Startup/CLI/service state	db, tasks, meta, quic/udp
wait_shutdown	Service loops	tasks, quic, udp
ErrorResponse	Typed HTTP errors	http, db, storage, vld
normalize_path, to_brace_path, join_paths	Paths	static, openapi
RouteTable, RouteEntry, RouteValue, MetaMap, Needs, BuildCtx	Introspection	openapi, vld, meta, i18n, session
MatchedRoute, MatchedRouteCapture, MatchedMeta, MatchedMetaCapture	Post-match	meta, observability, devtools
Extensions, TypeMap	Low-level maps	advanced
Body, BoxError, HttpBody, ResponseBody	Streaming bodies	sse, compress
HtmlInject, HtmlAnchor, inject*	HTML rewrite	meta/devtools patterns
logger_skip_path, logger_skip_paths	Quiet routes	devtools
add_log_event_hook, LogRecord, …	Log sinks	devtools
request_id, RequestId, ensure_request_id	Correlation	core MW; plugins read via extensions / current_request_id
Deadline, MaxBody, RequestTimeout, tighten_deadline	Limits	http tests / clients
Bind	Listen helpers	tests / advanced bind
Cell, Slot	Share cells	rarely in plugins (mail has its own slot type)
after, before, around, map_html	Response MW helpers	available; plugins often custom-inject
RawHandler, IntoRawHandler	Escape hatch handlers	niche
FormData, RequestBuilder, Upload, UploadRules	Request building	uploads / tests
Handler, IntoHandler, FallibleHandler, …	Handler traits	framework glue

Crate-root companions (not only under extend)

Symbol	Role
App, Plugin, Request, Response, Html, Json	Daily drivers
with_state	Arc MW (also used heavily by plugins)
logger_skip_path	Same as extend (devtools)
current_request_id	Correlate store/redis/tasks traces
TestClient (feature testing)	Integration tests

Unused ≠ forbidden

Cell / Slot / map_html are part of the supported SDK even if few plugins use them today. Prefer documented helpers over inventing parallel utilities.