refactor(mode-prompts): migrate hyperplan prompt

Ultraworked with [Sisyphus](https://github.com/code-yeongyu/oh-my-openagent)

Co-authored-by: Sisyphus <clio-agent@sisyphuslabs.ai>

src/hooks/keyword-detector/hyperplan/default.ts

@@ -1,3 +1,5 @@
+import { HYPERPLAN_MODE_PROMPT } from "@oh-my-opencode/prompts-core"
+
 /**
  * Hyperplan keyword detector.
  *
@@ -17,28 +19,4 @@
 
 export const HYPERPLAN_PATTERN = /\bhyperplan\b|(?<![\w.])hpp\b/i
 
-export const HYPERPLAN_MESSAGE = `<hyperplan-mode>
-**MANDATORY**: Say "HYPERPLAN MODE ENABLED!" as your first response, exactly once.
-
-The user invoked **hyperplan mode** — adversarial multi-agent planning via team-mode.
-
-LOAD THE HYPERPLAN SKILL IMMEDIATELY:
-
-\`\`\`
-skill(name="hyperplan")
-\`\`\`
-
-After loading, follow the skill's full workflow EXACTLY:
-1. Acknowledge and capture the planning request
-2. Spawn the adversarial team via \`team_create\` with category members \`unspecified-low\`, \`unspecified-high\`, \`ultrabrain\`, and \`artistry\`; include \`deep\` only if the category is enabled
-3. Round 1 — Independent analysis (each member produces findings)
-4. Round 2 — Cross-attack (each member ruthlessly attacks the other 4's findings)
-5. Round 3 — Defend, refine, or concede
-6. Distill defensible insights into a structured bundle (Lead does NOT write the plan)
-7. MANDATORY: hand the bundle to the \`plan\` agent via \`task(subagent_type="plan", ...)\` — the plan agent owns sequencing, parallelization, and verification gates
-8. Present the plan agent's output verbatim with provenance line, then clean up the team
-
-Do NOT improvise. Do NOT skip rounds. Do NOT write the plan yourself in step 6 — the handoff to the plan agent in step 7 is non-negotiable. Be the lead orchestrator and let the adversarial members do the cross-critique.
-
-If team-mode is unavailable (\`team_*\` tools missing), instruct the user to set \`team_mode.enabled: true\` in \`~/.config/opencode/oh-my-opencode.jsonc\` and restart opencode.
-</hyperplan-mode>`
+export const HYPERPLAN_MESSAGE = HYPERPLAN_MODE_PROMPT