Gate JSDoc completeness on every package export

New doc-sync gate verify-export-jsdoc walks every module-level exported
name under packages/*/*/src and requires description prose everywhere,
plus @param per parameter and @returns on non-void annotated returns for
function-like exports, public class methods, properties, and accessors.
The parsing + check helpers move out of gen-cordis-catalog.ts into a
shared scripts/jsdoc.ts so 'documented' means one thing on both gated
surfaces.

Deliberate exemptions (documented in the RFC): heritage-declared class
members (the seam declaration is the doc's one home — the one checker
query in an otherwise pure-AST walk), cordis plugin-protocol slots
(name/inject/reusable/Config/apply, top-level and static), constructors,
overload implementations, declare-module augmentation bodies, and
re-export statements (checked at the defining module).

The 203 under-documented exports the gate found at adoption are filled
in this change, so the gate lands green; generated catalogs/graphs are
regenerated for the shifted line pointers.

RFC: docs/rfc/implemented/process/2026-07-06-export-surface-jsdoc-gate.md

packages/hooks/hooks-claude/src/config.ts

@@ -43,7 +43,12 @@ function asObject(value: unknown): Record<string, unknown> | undefined {
     : undefined
 }
 
-/** Apply `${CLAUDE_PLUGIN_ROOT}` / `${CLAUDE_PROJECT_DIR}` substitution to a command string. */
+/**
+ * Apply `${CLAUDE_PLUGIN_ROOT}` / `${CLAUDE_PROJECT_DIR}` substitution to a command string.
+ * @param command - the raw command from config.
+ * @param vars - the substitution values; a token whose variable is unset stays verbatim.
+ * @returns the command with every occurrence of each set token replaced.
+ */
 export function substituteCommand(command: string, vars: SubstitutionVars): string {
   let out = command
   if (vars.pluginRoot !== undefined) out = out.split('${CLAUDE_PLUGIN_ROOT}').join(vars.pluginRoot)
@@ -57,6 +62,9 @@ export function substituteCommand(command: string, vars: SubstitutionVars): stri
  * Non-command hooks and malformed entries are dropped (recorded in `skipped` /
  * silently ignored) rather than throwing — a bad hook config must not crash boot.
  * `vars` are substituted into every surviving `command`.
+ * @param raw - the parsed JSON config: a settings object with a `hooks` key, or the bare event map.
+ * @param vars - substitution values applied to every surviving `command` (defaults to none).
+ * @returns the runnable per-event groups plus the skipped non-command hooks.
  */
 export function parseClaudeConfig(raw: unknown, vars: SubstitutionVars = {}): ParsedClaudeConfig {
   const config: ClaudeHookConfig = {}