feat(keyword-detector): add per-keyword disable config

Adds keyword_detector.disabled_keywords config so users can opt out of
specific keyword detectors individually without disabling the entire
keyword-detector hook. Allowed values: 'ultrawork', 'search', 'analyze',
'team'. Default empty/missing -> all four detectors active (no behavior
change for existing configs).

Motivation: an audit revealed search and analyze patterns trigger on
~30-60% of normal conversational user messages (e.g. 'how to', 'why is',
'show me', '왜', '어떻게'). The disable list is the immediate kill switch
while the patterns themselves are tightened in a separate PR.

Schema follows the existing per-feature config block convention shared
by team_mode, ralph_loop, runtime_fallback, and comment_checker. The
KeywordType enum (z.enum) lives next to the config schema and is
re-imported by the detector to keep the union type in lockstep with the
schema.

Threading:
  pluginConfig.keyword_detector
    -> create-transform-hooks.ts (factory wiring)
    -> createKeywordDetectorHook(config)
    -> detectKeywordsWithType(text, agent, model, disabledKeywords)
    -> Set-based filter at the source-of-truth detector

Adds 8 regression tests covering per-keyword disable, multi-keyword
disable, partial disable (one keyword off, another still firing),
ultrawork toast suppression, undefined config, and empty array.

src/config/schema/keyword-detector.ts

@@ -0,0 +1,10 @@
+import { z } from "zod"
+
+export const KeywordTypeSchema = z.enum(["ultrawork", "search", "analyze", "team"])
+export type KeywordType = z.infer<typeof KeywordTypeSchema>
+
+export const KeywordDetectorConfigSchema = z.object({
+  disabled_keywords: z.array(KeywordTypeSchema).optional(),
+})
+
+export type KeywordDetectorConfig = z.infer<typeof KeywordDetectorConfigSchema>

src/config/schema/oh-my-opencode-config.ts

@@ -12,6 +12,7 @@ import { CommentCheckerConfigSchema } from "./comment-checker"
 import { BuiltinCommandNameSchema } from "./commands"
 import { ExperimentalConfigSchema } from "./experimental"
 import { GitMasterConfigSchema } from "./git-master"
+import { KeywordDetectorConfigSchema } from "./keyword-detector"
 import { NotificationConfigSchema } from "./notification"
 import { OpenClawConfigSchema } from "./openclaw"
 import { ModelCapabilitiesConfigSchema } from "./model-capabilities"
@@ -65,6 +66,8 @@ export const OhMyOpenCodeConfigSchema = z.object({
   model_capabilities: ModelCapabilitiesConfigSchema.optional(),
   openclaw: OpenClawConfigSchema.optional(),
   team_mode: TeamModeConfigSchema.optional(),
+  /** Per-keyword disable list for the keyword-detector transform hook. Allowed values: "ultrawork", "search", "analyze", "team". */
+  keyword_detector: KeywordDetectorConfigSchema.optional(),
   babysitting: BabysittingConfigSchema.optional(),
   git_master: GitMasterConfigSchema.default({
     commit_footer: true,