fix: resolve publish blockers for v3.7.4→v3.8.0 release

- Fix #1991 crash: optional chaining for task-history sessionID access
- Fix #1992 think-mode: add antigravity entries to HIGH_VARIANT_MAP
- Fix #1949 Copilot premium misattribution: use createInternalAgentTextPart
- Fix #1982 load_skills: pass directory to discoverSkills for project-level skills
- Fix command priority: sort scopePriority before .find(), project-first return
- Fix Google provider transform: apply in userFallbackModels path
- Fix ralph-loop TUI: optional chaining for event handler
- Fix runtime-fallback: unify dual fallback engines, remove HTTP 400 from retry,
  fix pendingFallbackModel stuck state, add priority gate to skip model-fallback
  when runtime-fallback is active
- Fix Prometheus task system: exempt from todowrite/todoread deny
- Fix background_output: default full_session to true
- Remove orphan hooks: hashline-edit-diff-enhancer (redundant with hashline_edit
  built-in diff), task-reminder (dead code)
- Remove orphan config entries: 3 stale hook names from Zod schema
- Fix disabled_hooks schema: accept arbitrary strings for forward compatibility
- Register json-error-recovery hook in tool-guard pipeline
- Add disabled_hooks gating for question-label-truncator, task-resume-info,
  claude-code-hooks
- Update test expectations to match new behavior

src/hooks/task-reminder/hook.ts

@@ -1,59 +0,0 @@
-import type { PluginInput } from "@opencode-ai/plugin"
-
-const TASK_TOOLS = new Set([
-  "task",
-  "task_create",
-  "task_list",
-  "task_get",
-  "task_update",
-  "task_delete",
-])
-const TURN_THRESHOLD = 10
-const REMINDER_MESSAGE = `
-
-The task tools haven't been used recently. If you're tracking work, use task with action=create/update (or task_create/task_update) to record progress.`
-
-interface ToolExecuteInput {
-  tool: string
-  sessionID: string
-  callID: string
-}
-
-interface ToolExecuteOutput {
-  output: string
-}
-
-export function createTaskReminderHook(_ctx: PluginInput) {
-  const sessionCounters = new Map<string, number>()
-
-  const toolExecuteAfter = async (input: ToolExecuteInput, output: ToolExecuteOutput) => {
-    const { tool, sessionID } = input
-    const toolLower = tool.toLowerCase()
-
-    if (TASK_TOOLS.has(toolLower)) {
-      sessionCounters.set(sessionID, 0)
-      return
-    }
-
-    const currentCount = sessionCounters.get(sessionID) ?? 0
-    const newCount = currentCount + 1
-
-    if (newCount >= TURN_THRESHOLD) {
-      output.output += REMINDER_MESSAGE
-      sessionCounters.set(sessionID, 0)
-    } else {
-      sessionCounters.set(sessionID, newCount)
-    }
-  }
-
-  return {
-    "tool.execute.after": toolExecuteAfter,
-    event: async ({ event }: { event: { type: string; properties?: unknown } }) => {
-      if (event.type !== "session.deleted") return
-      const props = event.properties as { info?: { id?: string } } | undefined
-      const sessionId = props?.info?.id
-      if (!sessionId) return
-      sessionCounters.delete(sessionId)
-    },
-  }
-}