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diff --git a/src/main/claude/phases.ts b/src/main/claude/phases.ts
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+import type { PermissionMode } from "@anthropic-ai/claude-agent-sdk";
+
+export type Phase = "research" | "plan" | "implement";
+export type UserPermissionMode = "acceptEdits" | "bypassPermissions";
+
+export interface PhaseConfig {
+  systemPrompt: string;
+  tools: string[];
+  permissionMode: PermissionMode;
+  initialMessage: string;
+}
+
+export const phaseConfigs: Record<Phase, PhaseConfig> = {
+  research: {
+    permissionMode: "plan",
+    tools: ["Read", "Glob", "Grep", "Bash", "Write"],
+    initialMessage:
+      "What areas of the codebase should I research? What are you trying to build?",
+    systemPrompt: `You are in RESEARCH mode.
+
+Your job is to deeply understand the codebase before any changes are made.
+
+When the user tells you what to research:
+1. Read files thoroughly — understand all intricacies
+2. Write your findings to .claude-flow/research.md
+3. Format it as clear, readable markdown
+
+Rules:
+- DO NOT make any code changes
+- DO NOT modify any files except .claude-flow/research.md
+- Be thorough — surface-level reading is not acceptable
+
+When the user clicks "Review", read .claude-flow/research.md for their annotations and update accordingly.
+When the user clicks "Submit", they're ready to move to planning.`,
+  },
+
+  plan: {
+    permissionMode: "plan",
+    tools: ["Read", "Glob", "Grep", "Write"],
+    initialMessage:
+      "I'll create a detailed implementation plan based on my research. Give me a moment...",
+    systemPrompt: `You are in PLANNING mode.
+
+Based on the research in .claude-flow/research.md, write a detailed implementation plan.
+
+Write the plan to .claude-flow/plan.md with:
+- Detailed explanation of the approach
+- Specific code snippets showing proposed changes
+- File paths that will be modified
+- Trade-offs and considerations
+- A granular TODO list with checkboxes
+
+Rules:
+- DO NOT implement anything
+- DO NOT modify any source files
+- Only write to .claude-flow/plan.md
+
+The plan should be detailed enough that implementation becomes mechanical.
+
+When the user clicks "Review", read .claude-flow/plan.md for their annotations and update accordingly.
+When the user clicks "Submit", begin implementation.`,
+  },
+
+  implement: {
+    permissionMode: "acceptEdits",
+    tools: ["Read", "Write", "Edit", "Bash", "Glob", "Grep"],
+    initialMessage:
+      "Starting implementation. I'll follow the plan exactly and mark tasks complete as I go.",
+    systemPrompt: `You are in IMPLEMENTATION mode. The plan has been approved.
+
+Read .claude-flow/plan.md and execute it:
+- Follow the plan exactly
+- Mark tasks complete (- [x]) as you finish them
+- Run typecheck/lint continuously if available
+- Do not add unnecessary comments
+- Do not stop until all tasks are complete
+
+If you encounter issues not covered by the plan, stop and ask.`,
+  },
+};
+
+export function getPhaseConfig(
+  phase: Phase,
+  userPermissionMode?: UserPermissionMode
+): PhaseConfig {
+  const config = { ...phaseConfigs[phase] };
+  if (phase === "implement" && userPermissionMode) {
+    config.permissionMode = userPermissionMode;
+  }
+  return config;
+}
+
+export function getNextPhase(phase: Phase): Phase | null {
+  const transitions: Record<Phase, Phase | null> = {
+    research: "plan",
+    plan: "implement",
+    implement: null,
+  };
+  return transitions[phase];
+}
+
+export function getArtifactFilename(phase: Phase): string {
+  return phase === "research" ? "research.md" : "plan.md";
+}