1

Signed-off-by: Dmytro Stanchiev <git@dmytros.dev>

.gitignore

@@ -0,0 +1,3 @@
+dist/
+node_modules/
+.DS_Store

LICENSE.md

@@ -0,0 +1,80 @@
+# License
+
+Portions of this software are licensed as follows:
+
+- All third party components incorporated into the Software are licensed under the original license
+  provided by the owner of the applicable component.
+- Content outside of the above mentioned files or restrictions is available under the "Sustainable Use
+  License" as defined below.
+
+## Sustainable Use License
+
+Version 1.0
+
+### Acceptance
+
+By using the software, you agree to all of the terms and conditions below.
+
+### Copyright License
+
+The licensor grants you a non-exclusive, royalty-free, worldwide, non-sublicensable, non-transferable license
+to use, copy, distribute, make available, and prepare derivative works of the software, in each case subject
+to the limitations below.
+
+### Limitations
+
+You may use or modify the software only for your own internal business purposes or for non-commercial or
+personal use. You may distribute the software or provide it to others only if you do so free of charge for
+non-commercial purposes. You may not alter, remove, or obscure any licensing, copyright, or other notices of
+the licensor in the software. Any use of the licensor's trademarks is subject to applicable law.
+
+### Patents
+
+The licensor grants you a license, under any patent claims the licensor can license, or becomes able to
+license, to make, have made, use, sell, offer for sale, import and have imported the software, in each case
+subject to the limitations and conditions in this license. This license does not cover any patent claims that
+you cause to be infringed by modifications or additions to the software. If you or your company make any
+written claim that the software infringes or contributes to infringement of any patent, your patent license
+for the software granted under these terms ends immediately. If your company makes such a claim, your patent
+license ends immediately for work on behalf of your company.
+
+### Notices
+
+You must ensure that anyone who gets a copy of any part of the software from you also gets a copy of these
+terms. If you modify the software, you must include in any modified copies of the software a prominent notice
+stating that you have modified the software.
+
+### No Other Rights
+
+These terms do not imply any licenses other than those expressly granted in these terms.
+
+### Termination
+
+If you use the software in violation of these terms, such use is not licensed, and your license will
+automatically terminate. If the licensor provides you with a notice of your violation, and you cease all
+violation of this license no later than 30 days after you receive that notice, your license will be reinstated
+retroactively. However, if you violate these terms after such reinstatement, any additional violation of these
+terms will cause your license to terminate automatically and permanently.
+
+### No Liability
+
+As far as the law allows, the software comes as is, without any warranty or condition, and the licensor will
+not be liable to you for any damages arising out of these terms or the use or nature of the software, under
+any kind of legal claim.
+
+### Definitions
+
+The "licensor" is the entity offering these terms.
+
+The "software" is the software the licensor makes available under these terms, including any portion of it.
+
+"You" refers to the individual or entity agreeing to these terms.
+
+"Your company" is any legal entity, sole proprietorship, or other kind of organization that you work for, plus
+all organizations that have control over, are under the control of, or are under common control with that
+organization. Control means ownership of substantially all the assets of an entity, or the power to direct its
+management and policies by vote, contract, or otherwise. Control can be direct or indirect.
+
+"Your license" is the license granted to you for the software under these terms.
+
+"Use" means anything you do with the software requiring your license.

README.md

@@ -0,0 +1,10 @@
+# opencode-plugin-ralph-loop
+
+Standalone implementation of the **Ralph Loop** (self-referential dev loop) extracted from `oh-my-opencode`.
+
+Provides:
+- `/ralph-loop` command
+- `/ulw-loop` command (ultrawork mode)
+- `/cancel-ralph` command
+
+State is persisted to `.sisyphus/ralph-loop.local.md` in the current project directory.

bun.lock

@@ -0,0 +1,31 @@
+{
+  "lockfileVersion": 1,
+  "configVersion": 1,
+  "workspaces": {
+    "": {
+      "name": "opencode-plugin-ralph-loop",
+      "dependencies": {
+        "@opencode-ai/plugin": "^1.1.19",
+      },
+      "devDependencies": {
+        "bun-types": "1.3.6",
+        "typescript": "^5.7.3",
+      },
+    },
+  },
+  "packages": {
+    "@opencode-ai/plugin": ["@opencode-ai/plugin@1.2.15", "", { "dependencies": { "@opencode-ai/sdk": "1.2.15", "zod": "4.1.8" } }, "sha512-mh9S05W+CZZmo6q3uIEBubS66QVgiev7fRafX7vemrCfz+3pEIkSwipLjU/sxIewC9yLiDWLqS73DH/iEQzVDw=="],
+
+    "@opencode-ai/sdk": ["@opencode-ai/sdk@1.2.15", "", {}, "sha512-NUJNlyBCdZ4R0EBLjJziEQOp2XbRPJosaMcTcWSWO5XJPKGUpz0u8ql+5cR8K+v2RJ+hp2NobtNwpjEYfe6BRQ=="],
+
+    "@types/node": ["@types/node@25.3.1", "", { "dependencies": { "undici-types": "~7.18.0" } }, "sha512-hj9YIJimBCipHVfHKRMnvmHg+wfhKc0o4mTtXh9pKBjC8TLJzz0nzGmLi5UJsYAUgSvXFHgb0V2oY10DUFtImw=="],
+
+    "bun-types": ["bun-types@1.3.6", "", { "dependencies": { "@types/node": "*" } }, "sha512-OlFwHcnNV99r//9v5IIOgQ9Uk37gZqrNMCcqEaExdkVq3Avwqok1bJFmvGMCkCE0FqzdY8VMOZpfpR3lwI+CsQ=="],
+
+    "typescript": ["typescript@5.9.3", "", { "bin": { "tsc": "bin/tsc", "tsserver": "bin/tsserver" } }, "sha512-jl1vZzPDinLr9eUt3J/t7V6FgNEw9QjvBPdysz9KfQDD41fQrC2Y4vKQdiaUpFT4bXlb1RHhLpp8wtm6M5TgSw=="],
+
+    "undici-types": ["undici-types@7.18.2", "", {}, "sha512-AsuCzffGHJybSaRrmr5eHr81mwJU3kjw6M+uprWvCXiNeN9SOGwQ3Jn8jb8m3Z6izVgknn1R0FTCEAP2QrLY/w=="],
+
+    "zod": ["zod@4.1.8", "", {}, "sha512-5R1P+WwQqmmMIEACyzSvo4JXHY5WiAFHRMg+zBZKgKS+Q1viRa0C1hmUKtHltoIFKtIdki3pRxkmpP74jnNYHQ=="],
+  }
+}

package.json

@@ -0,0 +1,39 @@
+{
+  "name": "opencode-plugin-ralph-loop",
+  "version": "0.1.0",
+  "description": "Standalone Ralph Loop plugin for OpenCode (extracted from oh-my-opencode)",
+  "main": "dist/index.js",
+  "types": "dist/index.d.ts",
+  "type": "module",
+  "files": [
+    "dist",
+    "README.md",
+    "LICENSE.md"
+  ],
+  "exports": {
+    ".": {
+      "types": "./dist/index.d.ts",
+      "import": "./dist/index.js"
+    }
+  },
+  "scripts": {
+    "build": "bun build src/index.ts --outdir dist --target bun --format esm && tsc --emitDeclarationOnly",
+    "clean": "rm -rf dist",
+    "prepublishOnly": "bun run clean && bun run build",
+    "typecheck": "tsc --noEmit"
+  },
+  "keywords": [
+    "opencode",
+    "plugin",
+    "ralph-loop",
+    "continuation"
+  ],
+  "license": "SUL-1.0",
+  "dependencies": {
+    "@opencode-ai/plugin": "^1.1.19"
+  },
+  "devDependencies": {
+    "bun-types": "1.3.6",
+    "typescript": "^5.7.3"
+  }
+}

src/index.ts

@@ -0,0 +1,134 @@
+import type { Plugin } from "@opencode-ai/plugin"
+
+import { loadRalphLoopConfig } from "./ralph-loop/config"
+import { RALPH_LOOP_COMMANDS } from "./ralph-loop/commands"
+import { parseRalphLoopArguments } from "./ralph-loop/command-arguments"
+import { createRalphLoopHook } from "./ralph-loop/ralph-loop-hook"
+
+type ToolExecuteBeforeInput = { tool: string; sessionID: string; callID: string }
+type ToolExecuteBeforeOutput = { args: Record<string, unknown> }
+
+type ChatMessagePart = { type: string; text?: string; [key: string]: unknown }
+type ChatMessageInput = { sessionID: string; agent?: string; model?: unknown }
+type ChatMessageOutput = { message: Record<string, unknown>; parts: ChatMessagePart[] }
+
+function isRecord(value: unknown): value is Record<string, unknown> {
+  return typeof value === "object" && value !== null
+}
+
+const RalphLoopPlugin: Plugin = async (ctx) => {
+  const ralphConfig = loadRalphLoopConfig(ctx.directory)
+
+  const ralphLoop = createRalphLoopHook(ctx, {
+    config: ralphConfig,
+    checkSessionExists: async (sessionID) => {
+      try {
+        const sessionApi = ctx.client.session as unknown as {
+          get?: (args: {
+            path: { id: string }
+            query?: { directory: string }
+          }) => Promise<unknown>
+        }
+        if (typeof sessionApi.get !== "function") return false
+
+        // Some OpenCode SDK versions require `query.directory`, some ignore it.
+        const response = await sessionApi.get({
+          path: { id: sessionID },
+          query: { directory: ctx.directory },
+        })
+
+        const data =
+          isRecord(response) && "data" in response
+            ? response.data
+            : isRecord(response) && "200" in response
+              ? response["200"]
+              : response
+
+        const id = isRecord(data) ? data.id : undefined
+        return typeof id === "string" && id.length > 0
+      } catch {
+        return false
+      }
+    },
+  })
+
+  return {
+    config: async (config: Record<string, unknown>) => {
+      const existing = (config.command as Record<string, unknown>) ?? {}
+      // Builtins first; allow user/system overrides to win.
+      config.command = { ...RALPH_LOOP_COMMANDS, ...existing }
+    },
+
+    "tool.execute.before": async (input: ToolExecuteBeforeInput, output: ToolExecuteBeforeOutput) => {
+      if (!ralphLoop) return
+      if (input.tool !== "skill") return
+
+      const rawName = typeof output.args.name === "string" ? output.args.name : undefined
+      if (!rawName) return
+
+      const command = rawName.replace(/^\//, "").toLowerCase()
+      const sessionID = input.sessionID
+      if (!sessionID) return
+
+      if (command.startsWith("ralph-loop")) {
+        const rawArgs = rawName.replace(/^\/?(ralph-loop)\s*/i, "")
+        const parsed = parseRalphLoopArguments(rawArgs)
+        ralphLoop.startLoop(sessionID, parsed.prompt, {
+          maxIterations: parsed.maxIterations,
+          completionPromise: parsed.completionPromise,
+          strategy: parsed.strategy,
+        })
+      } else if (command.startsWith("ulw-loop")) {
+        const rawArgs = rawName.replace(/^\/?(ulw-loop)\s*/i, "")
+        const parsed = parseRalphLoopArguments(rawArgs)
+        ralphLoop.startLoop(sessionID, parsed.prompt, {
+          ultrawork: true,
+          maxIterations: parsed.maxIterations,
+          completionPromise: parsed.completionPromise,
+          strategy: parsed.strategy,
+        })
+      } else if (command.startsWith("cancel-ralph")) {
+        ralphLoop.cancelLoop(sessionID)
+      }
+    },
+
+    "chat.message": async (input: ChatMessageInput, output: ChatMessageOutput) => {
+      if (!ralphLoop) return
+
+      const parts = output.parts
+      const promptText =
+        parts
+          ?.filter((p) => p.type === "text" && p.text)
+          .map((p) => p.text)
+          .join("\n")
+          .trim() || ""
+
+      const isRalphLoopTemplate =
+        promptText.includes("You are starting a Ralph Loop") &&
+        promptText.includes("<user-task>")
+      const isCancelRalphTemplate = promptText.includes(
+        "Cancel the currently active Ralph Loop",
+      )
+
+      if (isRalphLoopTemplate) {
+        const taskMatch = promptText.match(/<user-task>\s*([\s\S]*?)\s*<\/user-task>/i)
+        const rawTask = taskMatch?.[1]?.trim() || ""
+        const parsed = parseRalphLoopArguments(rawTask)
+
+        ralphLoop.startLoop(input.sessionID, parsed.prompt, {
+          maxIterations: parsed.maxIterations,
+          completionPromise: parsed.completionPromise,
+          strategy: parsed.strategy,
+        })
+      } else if (isCancelRalphTemplate) {
+        ralphLoop.cancelLoop(input.sessionID)
+      }
+    },
+
+    event: async (input: { event: { type: string; properties?: unknown } }) => {
+      await ralphLoop.event(input)
+    },
+  }
+}
+
+export default RalphLoopPlugin

src/ralph-loop/claude-config-dir.ts

@@ -0,0 +1,8 @@
+import { homedir } from "node:os"
+import { join } from "node:path"
+
+export function getClaudeConfigDir(): string {
+  const envConfigDir = process.env.CLAUDE_CONFIG_DIR
+  if (envConfigDir) return envConfigDir
+  return join(homedir(), ".claude")
+}

src/ralph-loop/command-arguments.ts

@@ -0,0 +1,38 @@
+export type RalphLoopStrategy = "reset" | "continue"
+
+export type ParsedRalphLoopArguments = {
+  prompt: string
+  maxIterations?: number
+  completionPromise?: string
+  strategy?: RalphLoopStrategy
+}
+
+const DEFAULT_PROMPT = "Complete the task as instructed"
+
+export function parseRalphLoopArguments(rawArguments: string): ParsedRalphLoopArguments {
+  const taskMatch = rawArguments.match(/^("|')(.+?)\1/)
+  const promptCandidate =
+    taskMatch?.[2] ??
+    (rawArguments.startsWith("--")
+      ? ""
+      : rawArguments.split(/\s+--/)[0]?.trim() ?? "")
+  const prompt = promptCandidate || DEFAULT_PROMPT
+
+  const maxIterationMatch = rawArguments.match(/--max-iterations=(\d+)/i)
+  const maxIterationsRaw = maxIterationMatch?.[1]
+  const completionPromiseQuoted = rawArguments.match(/--completion-promise=("|')(.+?)\1/i)
+  const completionPromiseUnquoted = rawArguments.match(/--completion-promise=([^\s\"']+)/i)
+  const completionPromise = completionPromiseQuoted?.[2] ?? completionPromiseUnquoted?.[1]
+  const strategyMatch = rawArguments.match(/--strategy=(reset|continue)/i)
+  const strategyValue = strategyMatch?.[1]?.toLowerCase()
+
+  return {
+    prompt,
+    maxIterations: maxIterationsRaw ? Number.parseInt(maxIterationsRaw, 10) : undefined,
+    completionPromise,
+    strategy:
+      strategyValue === "reset" || strategyValue === "continue"
+        ? (strategyValue as RalphLoopStrategy)
+        : undefined,
+  }
+}

src/ralph-loop/commands.ts

@@ -0,0 +1,56 @@
+export const RALPH_LOOP_TEMPLATE = `You are starting a Ralph Loop - a self-referential development loop that runs until task completion.
+
+## How Ralph Loop Works
+
+1. You will work on the task continuously
+2. When you believe the task is FULLY complete, output: \`<promise>{{COMPLETION_PROMISE}}</promise>\`
+3. If you don't output the promise, the loop will automatically inject another prompt to continue
+4. Maximum iterations: Configurable (default 100)
+
+## Rules
+
+- Focus on completing the task fully, not partially
+- Don't output the completion promise until the task is truly done
+- Each iteration should make meaningful progress toward the goal
+- If stuck, try different approaches
+- Use todos to track your progress
+
+## Exit Conditions
+
+1. **Completion**: Output your completion promise tag when fully complete
+2. **Max Iterations**: Loop stops automatically at limit
+3. **Cancel**: User runs \`/cancel-ralph\` command
+
+## Your Task
+
+Parse the arguments below and begin working on the task. The format is:
+\`"task description" [--completion-promise=TEXT] [--max-iterations=N] [--strategy=reset|continue]\`
+
+Default completion promise is "DONE" and default max iterations is 100.`
+
+export const CANCEL_RALPH_TEMPLATE = `Cancel the currently active Ralph Loop.
+
+This will:
+1. Stop the loop from continuing
+2. Clear the loop state file
+3. Allow the session to end normally
+
+Check if a loop is active and cancel it. Inform the user of the result.`
+
+export const RALPH_LOOP_COMMANDS: Record<string, unknown> = {
+  "ralph-loop": {
+    name: "ralph-loop",
+    description: "(builtin) Start self-referential development loop until completion",
+    template: `<command-instruction>\n${RALPH_LOOP_TEMPLATE}\n</command-instruction>\n\n<user-task>\n$ARGUMENTS\n</user-task>`,
+  },
+  "ulw-loop": {
+    name: "ulw-loop",
+    description: "(builtin) Start ultrawork loop - continues until completion with ultrawork mode",
+    template: `<command-instruction>\n${RALPH_LOOP_TEMPLATE}\n</command-instruction>\n\n<user-task>\n$ARGUMENTS\n</user-task>`,
+  },
+  "cancel-ralph": {
+    name: "cancel-ralph",
+    description: "(builtin) Cancel active Ralph Loop",
+    template: `<command-instruction>\n${CANCEL_RALPH_TEMPLATE}\n</command-instruction>`,
+  },
+}

src/ralph-loop/completion-promise-detector.ts

@@ -0,0 +1,105 @@
+import type { PluginInput } from "@opencode-ai/plugin"
+import { existsSync, readFileSync } from "node:fs"
+
+import { log } from "./logger"
+import { HOOK_NAME } from "./constants"
+import { withTimeout } from "./with-timeout"
+
+interface OpenCodeSessionMessage {
+  info?: { role?: string }
+  parts?: Array<{ type: string; text?: string }>
+}
+
+function isRecord(value: unknown): value is Record<string, unknown> {
+  return typeof value === "object" && value !== null
+}
+
+function escapeRegex(str: string): string {
+  return str.replace(/[.*+?^${}()|[\]\\]/g, "\\$&")
+}
+
+function buildPromisePattern(promise: string): RegExp {
+  return new RegExp(`<promise>\\s*${escapeRegex(promise)}\\s*</promise>`, "is")
+}
+
+export function detectCompletionInTranscript(transcriptPath: string | undefined, promise: string): boolean {
+  if (!transcriptPath) return false
+  try {
+    if (!existsSync(transcriptPath)) return false
+    const content = readFileSync(transcriptPath, "utf-8")
+    const pattern = buildPromisePattern(promise)
+    const lines = content.split("\n").filter((line) => line.trim())
+    for (const line of lines) {
+      try {
+        const entry = JSON.parse(line) as { type?: string }
+        if (entry.type !== "user" && pattern.test(line)) return true
+      } catch {
+        // ignore malformed lines
+      }
+    }
+    return false
+  } catch {
+    return false
+  }
+}
+
+export async function detectCompletionInSessionMessages(
+  ctx: PluginInput,
+  options: { sessionID: string; promise: string; apiTimeoutMs: number; directory: string },
+): Promise<boolean> {
+  try {
+    const sessionApi = ctx.client.session as unknown as {
+      messages?: (args: {
+        path: { id: string }
+        query?: { directory: string }
+      }) => Promise<unknown>
+    }
+    if (typeof sessionApi.messages !== "function") return false
+
+    const response = await withTimeout(
+      sessionApi.messages({
+        path: { id: options.sessionID },
+        query: { directory: options.directory },
+      }),
+      options.apiTimeoutMs,
+    )
+
+    const messageArray: unknown[] = Array.isArray(response)
+      ? response
+      : isRecord(response) && Array.isArray(response.data)
+        ? (response.data as unknown[])
+        : isRecord(response) && Array.isArray(response["200"])
+          ? (response["200"] as unknown[])
+          : []
+
+    const assistantMessages = (messageArray as OpenCodeSessionMessage[]).filter(
+      (msg) => msg.info?.role === "assistant",
+    )
+    if (assistantMessages.length === 0) return false
+
+    const pattern = buildPromisePattern(options.promise)
+    const recentAssistants = assistantMessages.slice(-3)
+    for (const assistant of recentAssistants) {
+      if (!assistant.parts) continue
+
+      let responseText = ""
+      for (const part of assistant.parts) {
+        if (part.type !== "text") continue
+        responseText += `${responseText ? "\n" : ""}${part.text ?? ""}`
+      }
+
+      if (pattern.test(responseText)) {
+        return true
+      }
+    }
+    return false
+  } catch (err) {
+    setTimeout(() => {
+      log(`[${HOOK_NAME}] Session messages check failed`, {
+        sessionID: options.sessionID,
+        error: String(err),
+      })
+    }, 0)
+    return false
+  }
+}

src/ralph-loop/config.ts

@@ -0,0 +1,106 @@
+import { existsSync, readFileSync } from "node:fs"
+import { homedir } from "node:os"
+import { join } from "node:path"
+
+export type RalphLoopStrategy = "reset" | "continue"
+
+export type RalphLoopConfig = {
+  enabled?: boolean
+  default_max_iterations?: number
+  state_dir?: string
+  default_strategy?: RalphLoopStrategy
+}
+
+function resolveOpenCodeConfigDir(): string {
+  const xdg = process.env.XDG_CONFIG_HOME
+  if (xdg && xdg.length > 0) {
+    return join(xdg, "opencode")
+  }
+  return join(homedir(), ".config", "opencode")
+}
+
+function stripJsonComments(input: string): string {
+  // Minimal JSONC stripper that preserves strings.
+  let out = ""
+  let i = 0
+  let inString: '"' | "'" | null = null
+  while (i < input.length) {
+    const ch = input[i]
+    const next = i + 1 < input.length ? input[i + 1] : ""
+
+    if (inString) {
+      out += ch
+      if (ch === "\\") {
+        // Skip escaped char.
+        if (i + 1 < input.length) {
+          out += input[i + 1]
+          i += 2
+          continue
+        }
+      }
+      if (ch === inString) {
+        inString = null
+      }
+      i++
+      continue
+    }
+
+    if (ch === '"' || ch === "'") {
+      inString = ch
+      out += ch
+      i++
+      continue
+    }
+
+    if (ch === "/" && next === "/") {
+      // Line comment.
+      i += 2
+      while (i < input.length && input[i] !== "\n") i++
+      continue
+    }
+    if (ch === "/" && next === "*") {
+      // Block comment.
+      i += 2
+      while (i < input.length) {
+        if (input[i] === "*" && i + 1 < input.length && input[i + 1] === "/") {
+          i += 2
+          break
+        }
+        i++
+      }
+      continue
+    }
+
+    out += ch
+    i++
+  }
+  return out
+}
+
+function tryReadConfig(path: string): RalphLoopConfig | null {
+  if (!existsSync(path)) return null
+  try {
+    const raw = readFileSync(path, "utf-8")
+    const parsed = JSON.parse(stripJsonComments(raw)) as unknown
+    if (!parsed || typeof parsed !== "object") return null
+    return parsed as RalphLoopConfig
+  } catch {
+    return null
+  }
+}
+
+export function loadRalphLoopConfig(projectDir: string): RalphLoopConfig {
+  const userDir = resolveOpenCodeConfigDir()
+  const user =
+    tryReadConfig(join(userDir, "ralph-loop.jsonc")) ??
+    tryReadConfig(join(userDir, "ralph-loop.json"))
+
+  const project =
+    tryReadConfig(join(projectDir, ".opencode", "ralph-loop.jsonc")) ??
+    tryReadConfig(join(projectDir, ".opencode", "ralph-loop.json"))
+
+  return {
+    ...(user ?? {}),
+    ...(project ?? {}),
+  }
+}

src/ralph-loop/constants.ts

@@ -0,0 +1,4 @@
+export const HOOK_NAME = "ralph-loop"
+export const DEFAULT_STATE_FILE = ".sisyphus/ralph-loop.local.md"
+export const DEFAULT_MAX_ITERATIONS = 100
+export const DEFAULT_COMPLETION_PROMISE = "DONE"

src/ralph-loop/continuation-prompt-builder.ts

@@ -0,0 +1,24 @@
+import type { RalphLoopState } from "./types"
+import { SYSTEM_DIRECTIVE_PREFIX } from "./system-directive"
+
+const CONTINUATION_PROMPT = `${SYSTEM_DIRECTIVE_PREFIX} - RALPH LOOP {{ITERATION}}/{{MAX}}]
+
+Your previous attempt did not output the completion promise. Continue working on the task.
+
+IMPORTANT:
+- Review your progress so far
+- Continue from where you left off
+- When FULLY complete, output: <promise>{{PROMISE}}</promise>
+- Do not stop until the task is truly done
+
+Original task:
+{{PROMPT}}`
+
+export function buildContinuationPrompt(state: RalphLoopState): string {
+  const continuationPrompt = CONTINUATION_PROMPT.replace("{{ITERATION}}", String(state.iteration))
+    .replace("{{MAX}}", String(state.max_iterations))
+    .replace("{{PROMISE}}", state.completion_promise)
+    .replace("{{PROMPT}}", state.prompt)
+
+  return state.ultrawork ? `ultrawork ${continuationPrompt}` : continuationPrompt
+}

src/ralph-loop/continuation-prompt-injector.ts

@@ -0,0 +1,129 @@
+import type { PluginInput } from "@opencode-ai/plugin"
+
+import { log } from "./logger"
+import { createInternalAgentTextPart } from "./internal-initiator-marker"
+import { normalizeSDKResponse } from "./normalize-sdk-response"
+import { normalizePromptTools, type PromptToolPermission } from "./prompt-tools"
+import { withTimeout } from "./with-timeout"
+
+type MessageInfo = {
+  agent?: string
+  model?: { providerID: string; modelID: string }
+  modelID?: string
+  providerID?: string
+  tools?: Record<string, PromptToolPermission>
+}
+
+function isRecord(value: unknown): value is Record<string, unknown> {
+  return typeof value === "object" && value !== null
+}
+
+type PromptArgs = {
+  path: { id: string }
+  body: {
+    parts: Array<{ type: "text"; text: string }>
+    agent?: string
+    model?: { providerID: string; modelID: string }
+    tools?: Record<string, boolean>
+  }
+  query?: { directory: string }
+}
+
+type PromptApi = (args: PromptArgs) => Promise<unknown>
+
+function getPromptApi(
+  client: PluginInput["client"],
+): PromptApi | null {
+  const clientRecord = client as unknown
+  if (!isRecord(clientRecord)) return null
+  const sessionValue = clientRecord.session
+  if (!isRecord(sessionValue)) return null
+
+  const promptAsyncValue = sessionValue.promptAsync
+  if (typeof promptAsyncValue === "function") {
+    return (args) => Reflect.apply(promptAsyncValue, sessionValue, [args]) as Promise<unknown>
+  }
+
+  const promptValue = sessionValue.prompt
+  if (typeof promptValue === "function") {
+    return (args) => Reflect.apply(promptValue, sessionValue, [args]) as Promise<unknown>
+  }
+
+  return null
+}
+
+export async function injectContinuationPrompt(
+  ctx: PluginInput,
+  options: {
+    sessionID: string
+    prompt: string
+    directory: string
+    apiTimeoutMs: number
+    inheritFromSessionID?: string
+  },
+): Promise<void> {
+  let agent: string | undefined
+  let model: { providerID: string; modelID: string } | undefined
+  let tools: Record<string, PromptToolPermission> | undefined
+  const sourceSessionID = options.inheritFromSessionID ?? options.sessionID
+
+  try {
+    const sessionApi = ctx.client.session as unknown as {
+      messages?: (args: {
+        path: { id: string }
+        query?: { directory: string }
+      }) => Promise<unknown>
+    }
+    if (typeof sessionApi.messages !== "function") {
+      throw new Error("OpenCode client missing session.messages")
+    }
+
+    const messagesResp = await withTimeout(
+      sessionApi.messages({
+        path: { id: sourceSessionID },
+        query: { directory: options.directory },
+      }),
+      options.apiTimeoutMs,
+    )
+
+    const messages = normalizeSDKResponse(messagesResp, [] as Array<{ info?: MessageInfo }>, {
+      preferResponseOnMissingData: true,
+    })
+
+    for (let i = messages.length - 1; i >= 0; i--) {
+      const info = messages[i]?.info
+      if (info?.agent || info?.model || (info?.modelID && info?.providerID)) {
+        agent = info.agent
+        model =
+          info.model ??
+          (info.providerID && info.modelID
+            ? { providerID: info.providerID, modelID: info.modelID }
+            : undefined)
+        tools = info.tools
+        break
+      }
+    }
+  } catch {
+    // Best effort. If we cannot inherit message context, still inject prompt.
+  }
+
+  const inheritedTools = normalizePromptTools(tools)
+
+  const promptApi = getPromptApi(ctx.client)
+  if (!promptApi) {
+    throw new Error("OpenCode client missing session.prompt/promptAsync")
+  }
+
+  await promptApi({
+    path: { id: options.sessionID },
+    body: {
+      ...(agent !== undefined ? { agent } : {}),
+      ...(model !== undefined ? { model } : {}),
+      ...(inheritedTools ? { tools: inheritedTools } : {}),
+      parts: [createInternalAgentTextPart(options.prompt)],
+    },
+    query: { directory: options.directory },
+  })
+
+  log("[ralph-loop] continuation injected", { sessionID: options.sessionID })
+}

src/ralph-loop/internal-initiator-marker.ts

@@ -0,0 +1,8 @@
+export const OMO_INTERNAL_INITIATOR_MARKER = "<!-- OMO_INTERNAL_INITIATOR -->"
+
+export function createInternalAgentTextPart(text: string): { type: "text"; text: string } {
+  return {
+    type: "text",
+    text: `${text}\n${OMO_INTERNAL_INITIATOR_MARKER}`,
+  }
+}

src/ralph-loop/iteration-continuation.ts

@@ -0,0 +1,60 @@
+import type { PluginInput } from "@opencode-ai/plugin"
+
+import type { RalphLoopState } from "./types"
+import { log } from "./logger"
+import { HOOK_NAME } from "./constants"
+import { buildContinuationPrompt } from "./continuation-prompt-builder"
+import { injectContinuationPrompt } from "./continuation-prompt-injector"
+import { createIterationSession, selectSessionInTui } from "./session-reset-strategy"
+
+type ContinuationOptions = {
+  directory: string
+  apiTimeoutMs: number
+  previousSessionID: string
+  loopState: { setSessionID: (sessionID: string) => RalphLoopState | null }
+}
+
+export async function continueIteration(
+  ctx: PluginInput,
+  state: RalphLoopState,
+  options: ContinuationOptions,
+): Promise<void> {
+  const strategy = state.strategy ?? "continue"
+  const continuationPrompt = buildContinuationPrompt(state)
+
+  if (strategy === "reset") {
+    const newSessionID = await createIterationSession(
+      ctx,
+      options.previousSessionID,
+      options.directory,
+    )
+    if (!newSessionID) return
+
+    await injectContinuationPrompt(ctx, {
+      sessionID: newSessionID,
+      inheritFromSessionID: options.previousSessionID,
+      prompt: continuationPrompt,
+      directory: options.directory,
+      apiTimeoutMs: options.apiTimeoutMs,
+    })
+
+    await selectSessionInTui(ctx.client, newSessionID)
+
+    const boundState = options.loopState.setSessionID(newSessionID)
+    if (!boundState) {
+      log(`[${HOOK_NAME}] Failed to bind loop state to new session`, {
+        previousSessionID: options.previousSessionID,
+        newSessionID,
+      })
+      return
+    }
+    return
+  }
+
+  await injectContinuationPrompt(ctx, {
+    sessionID: options.previousSessionID,
+    prompt: continuationPrompt,
+    directory: options.directory,
+    apiTimeoutMs: options.apiTimeoutMs,
+  })
+}

src/ralph-loop/logger.ts

@@ -0,0 +1,35 @@
+import * as fs from "node:fs"
+import * as os from "node:os"
+import * as path from "node:path"
+
+const logFile = path.join(os.tmpdir(), "opencode-plugin-ralph-loop.log")
+
+function shouldLogToConsole(): boolean {
+  const raw = process.env.RALPH_LOOP_DEBUG
+  if (!raw) return false
+  return raw === "1" || raw.toLowerCase() === "true" || raw.toLowerCase() === "yes"
+}
+
+export function log(message: string, meta?: unknown): void {
+  try {
+    const timestamp = new Date().toISOString()
+    const entry = `[${timestamp}] ${message}${meta !== undefined ? ` ${JSON.stringify(meta)}` : ""}\n`
+    fs.appendFileSync(logFile, entry)
+  } catch {
+    // ignore
+  }
+
+  if (shouldLogToConsole()) {
+    try {
+      // eslint-disable-next-line no-console
+      console.log(message, meta)
+    } catch {
+      // eslint-disable-next-line no-console
+      console.log(message)
+    }
+  }
+}
+
+export function getLogFilePath(): string {
+  return logFile
+}

src/ralph-loop/loop-session-recovery.ts

@@ -0,0 +1,33 @@
+type SessionState = {
+  isRecovering?: boolean
+}
+
+export function createLoopSessionRecovery(options?: { recoveryWindowMs?: number }) {
+  const recoveryWindowMs = options?.recoveryWindowMs ?? 5000
+  const sessions = new Map<string, SessionState>()
+
+  function getSessionState(sessionID: string): SessionState {
+    let state = sessions.get(sessionID)
+    if (!state) {
+      state = {}
+      sessions.set(sessionID, state)
+    }
+    return state
+  }
+
+  return {
+    isRecovering(sessionID: string): boolean {
+      return getSessionState(sessionID).isRecovering === true
+    },
+    markRecovering(sessionID: string): void {
+      const state = getSessionState(sessionID)
+      state.isRecovering = true
+      setTimeout(() => {
+        state.isRecovering = false
+      }, recoveryWindowMs)
+    },
+    clear(sessionID: string): void {
+      sessions.delete(sessionID)
+    },
+  }
+}

src/ralph-loop/loop-state-controller.ts

@@ -0,0 +1,90 @@
+import type { RalphLoopOptions, RalphLoopState } from "./types"
+import {
+  DEFAULT_COMPLETION_PROMISE,
+  DEFAULT_MAX_ITERATIONS,
+  HOOK_NAME,
+} from "./constants"
+import { clearState, incrementIteration, readState, writeState } from "./storage"
+import { log } from "./logger"
+
+export function createLoopStateController(options: {
+  directory: string
+  stateDir: string | undefined
+  config: RalphLoopOptions["config"] | undefined
+}) {
+  const directory = options.directory
+  const stateDir = options.stateDir
+  const config = options.config
+
+  return {
+    startLoop(
+      sessionID: string,
+      prompt: string,
+      loopOptions?: {
+        maxIterations?: number
+        completionPromise?: string
+        ultrawork?: boolean
+        strategy?: "reset" | "continue"
+      },
+    ): boolean {
+      const state: RalphLoopState = {
+        active: true,
+        iteration: 1,
+        max_iterations:
+          loopOptions?.maxIterations ??
+          config?.default_max_iterations ??
+          DEFAULT_MAX_ITERATIONS,
+        completion_promise:
+          loopOptions?.completionPromise ?? DEFAULT_COMPLETION_PROMISE,
+        ultrawork: loopOptions?.ultrawork,
+        strategy: loopOptions?.strategy ?? config?.default_strategy ?? "continue",
+        started_at: new Date().toISOString(),
+        prompt,
+        session_id: sessionID,
+      }
+
+      const success = writeState(directory, state, stateDir)
+      if (success) {
+        log(`[${HOOK_NAME}] Loop started`, {
+          sessionID,
+          maxIterations: state.max_iterations,
+          completionPromise: state.completion_promise,
+        })
+      }
+      return success
+    },
+
+    cancelLoop(sessionID: string): boolean {
+      const state = readState(directory, stateDir)
+      if (!state || state.session_id !== sessionID) {
+        return false
+      }
+
+      const success = clearState(directory, stateDir)
+      if (success) {
+        log(`[${HOOK_NAME}] Loop cancelled`, { sessionID, iteration: state.iteration })
+      }
+      return success
+    },
+
+    getState(): RalphLoopState | null {
+      return readState(directory, stateDir)
+    },
+
+    clear(): boolean {
+      return clearState(directory, stateDir)
+    },
+
+    incrementIteration(): RalphLoopState | null {
+      return incrementIteration(directory, stateDir)
+    },
+
+    setSessionID(sessionID: string): RalphLoopState | null {
+      const state = readState(directory, stateDir)
+      if (!state) return null
+      state.session_id = sessionID
+      if (!writeState(directory, state, stateDir)) return null
+      return state
+    },
+  }
+}

src/ralph-loop/normalize-sdk-response.ts

@@ -0,0 +1,22 @@
+export function normalizeSDKResponse<T>(
+  response: unknown,
+  fallback: T,
+  options?: { preferResponseOnMissingData?: boolean },
+): T {
+  const prefer = options?.preferResponseOnMissingData ?? false
+  if (response && typeof response === "object") {
+    const rec = response as Record<string, unknown>
+    if ("data" in rec) {
+      const d = rec.data
+      if (d !== undefined) return d as T
+    }
+    if ("200" in rec) {
+      const d = rec["200"]
+      if (d !== undefined) return d as T
+    }
+  }
+  if (prefer && response !== undefined) {
+    return response as T
+  }
+  return fallback
+}

src/ralph-loop/prompt-tools.ts

@@ -0,0 +1,18 @@
+export type PromptToolPermission = boolean | "allow" | "deny" | "ask"
+
+export function normalizePromptTools(
+  tools: Record<string, PromptToolPermission> | undefined,
+): Record<string, boolean> | undefined {
+  if (!tools) return undefined
+  const normalized: Record<string, boolean> = {}
+  for (const [toolName, permission] of Object.entries(tools)) {
+    if (permission === false || permission === "deny") {
+      normalized[toolName] = false
+      continue
+    }
+    if (permission === true || permission === "allow" || permission === "ask") {
+      normalized[toolName] = true
+    }
+  }
+  return Object.keys(normalized).length > 0 ? normalized : undefined
+}

src/ralph-loop/ralph-loop-event-handler.ts

@@ -0,0 +1,221 @@
+import type { PluginInput } from "@opencode-ai/plugin"
+
+import { log } from "./logger"
+import type { RalphLoopOptions, RalphLoopState } from "./types"
+import { HOOK_NAME } from "./constants"
+import {
+  detectCompletionInSessionMessages,
+  detectCompletionInTranscript,
+} from "./completion-promise-detector"
+import { continueIteration } from "./iteration-continuation"
+
+function isRecord(value: unknown): value is Record<string, unknown> {
+  return typeof value === "object" && value !== null
+}
+
+type ToastBody = {
+  title: string
+  message: string
+  variant: string
+  duration: number
+}
+
+type ShowToastApi = (args: { body: ToastBody }) => Promise<unknown>
+
+function getShowToastApi(client: unknown): ShowToastApi | null {
+  if (!isRecord(client)) return null
+  const tui = client.tui
+  if (!isRecord(tui)) return null
+  const showToast = tui.showToast
+  if (typeof showToast !== "function") return null
+  return (args) => Reflect.apply(showToast, tui, [args]) as Promise<unknown>
+}
+
+type SessionRecovery = {
+  isRecovering: (sessionID: string) => boolean
+  markRecovering: (sessionID: string) => void
+  clear: (sessionID: string) => void
+}
+
+type LoopStateController = {
+  getState: () => RalphLoopState | null
+  clear: () => boolean
+  incrementIteration: () => RalphLoopState | null
+  setSessionID: (sessionID: string) => RalphLoopState | null
+}
+
+type RalphLoopEventHandlerOptions = {
+  directory: string
+  apiTimeoutMs: number
+  getTranscriptPath: (sessionID: string) => string | undefined
+  checkSessionExists?: RalphLoopOptions["checkSessionExists"]
+  sessionRecovery: SessionRecovery
+  loopState: LoopStateController
+}
+
+export function createRalphLoopEventHandler(ctx: PluginInput, options: RalphLoopEventHandlerOptions) {
+  return async ({ event }: { event: { type: string; properties?: unknown } }): Promise<void> => {
+    const props = event.properties as Record<string, unknown> | undefined
+    const showToast = getShowToastApi(ctx.client)
+
+    if (event.type === "session.idle") {
+      const sessionID = props?.sessionID as string | undefined
+      if (!sessionID) return
+
+      if (options.sessionRecovery.isRecovering(sessionID)) {
+        log(`[${HOOK_NAME}] Skipped: in recovery`, { sessionID })
+        return
+      }
+
+      const state = options.loopState.getState()
+      if (!state || !state.active) return
+
+      if (state.session_id && state.session_id !== sessionID) {
+        if (options.checkSessionExists) {
+          try {
+            const exists = await options.checkSessionExists(state.session_id)
+            if (!exists) {
+              options.loopState.clear()
+              log(`[${HOOK_NAME}] Cleared orphaned state from deleted session`, {
+                orphanedSessionId: state.session_id,
+                currentSessionId: sessionID,
+              })
+              return
+            }
+          } catch (err) {
+            log(`[${HOOK_NAME}] Failed to check session existence`, {
+              sessionId: state.session_id,
+              error: String(err),
+            })
+          }
+        }
+        return
+      }
+
+      const transcriptPath = options.getTranscriptPath(sessionID)
+      const completionViaTranscript = detectCompletionInTranscript(
+        transcriptPath,
+        state.completion_promise,
+      )
+      const completionViaApi = completionViaTranscript
+        ? false
+        : await detectCompletionInSessionMessages(ctx, {
+            sessionID,
+            promise: state.completion_promise,
+            apiTimeoutMs: options.apiTimeoutMs,
+            directory: options.directory,
+          })
+
+      if (completionViaTranscript || completionViaApi) {
+        log(`[${HOOK_NAME}] Completion detected!`, {
+          sessionID,
+          iteration: state.iteration,
+          promise: state.completion_promise,
+          detectedVia: completionViaTranscript ? "transcript_file" : "session_messages_api",
+        })
+        options.loopState.clear()
+
+        const title = state.ultrawork ? "ULTRAWORK LOOP COMPLETE!" : "Ralph Loop Complete!"
+        const message = state.ultrawork
+          ? `JUST ULW ULW! Task completed after ${state.iteration} iteration(s)`
+          : `Task completed after ${state.iteration} iteration(s)`
+        await showToast
+          ?.({ body: { title, message, variant: "success", duration: 5000 } })
+          .catch(() => {})
+        return
+      }
+
+      if (state.iteration >= state.max_iterations) {
+        log(`[${HOOK_NAME}] Max iterations reached`, {
+          sessionID,
+          iteration: state.iteration,
+          max: state.max_iterations,
+        })
+        options.loopState.clear()
+
+        await showToast
+          ?.({
+            body: {
+              title: "Ralph Loop Stopped",
+              message: `Max iterations (${state.max_iterations}) reached without completion`,
+              variant: "warning",
+              duration: 5000,
+            },
+          })
+          .catch(() => {})
+        return
+      }
+
+      const newState = options.loopState.incrementIteration()
+      if (!newState) {
+        log(`[${HOOK_NAME}] Failed to increment iteration`, { sessionID })
+        return
+      }
+
+      log(`[${HOOK_NAME}] Continuing loop`, {
+        sessionID,
+        iteration: newState.iteration,
+        max: newState.max_iterations,
+      })
+
+      await showToast
+        ?.({
+          body: {
+            title: "Ralph Loop",
+            message: `Iteration ${newState.iteration}/${newState.max_iterations}`,
+            variant: "info",
+            duration: 2000,
+          },
+        })
+        .catch(() => {})
+
+      try {
+        await continueIteration(ctx, newState, {
+          previousSessionID: sessionID,
+          directory: options.directory,
+          apiTimeoutMs: options.apiTimeoutMs,
+          loopState: options.loopState,
+        })
+      } catch (err) {
+        log(`[${HOOK_NAME}] Failed to inject continuation`, {
+          sessionID,
+          error: String(err),
+        })
+      }
+      return
+    }
+
+    if (event.type === "session.deleted") {
+      const sessionInfo = props?.info as { id?: string } | undefined
+      if (!sessionInfo?.id) return
+      const state = options.loopState.getState()
+      if (state?.session_id === sessionInfo.id) {
+        options.loopState.clear()
+        log(`[${HOOK_NAME}] Session deleted, loop cleared`, { sessionID: sessionInfo.id })
+      }
+      options.sessionRecovery.clear(sessionInfo.id)
+      return
+    }
+
+    if (event.type === "session.error") {
+      const sessionID = props?.sessionID as string | undefined
+      const error = props?.error as { name?: string } | undefined
+
+      if (error?.name === "MessageAbortedError") {
+        if (sessionID) {
+          const state = options.loopState.getState()
+          if (state?.session_id === sessionID) {
+            options.loopState.clear()
+            log(`[${HOOK_NAME}] User aborted, loop cleared`, { sessionID })
+          }
+          options.sessionRecovery.clear(sessionID)
+        }
+        return
+      }
+
+      if (sessionID) {
+        options.sessionRecovery.markRecovering(sessionID)
+      }
+    }
+  }
+}

src/ralph-loop/ralph-loop-hook.ts

@@ -0,0 +1,56 @@
+import type { PluginInput } from "@opencode-ai/plugin"
+
+import type { RalphLoopOptions, RalphLoopState } from "./types"
+import { getTranscriptPath as getDefaultTranscriptPath } from "./transcript"
+import { createLoopSessionRecovery } from "./loop-session-recovery"
+import { createLoopStateController } from "./loop-state-controller"
+import { createRalphLoopEventHandler } from "./ralph-loop-event-handler"
+
+export interface RalphLoopHook {
+  event: (input: { event: { type: string; properties?: unknown } }) => Promise<void>
+  startLoop: (
+    sessionID: string,
+    prompt: string,
+    options?: {
+      maxIterations?: number
+      completionPromise?: string
+      ultrawork?: boolean
+      strategy?: "reset" | "continue"
+    },
+  ) => boolean
+  cancelLoop: (sessionID: string) => boolean
+  getState: () => RalphLoopState | null
+}
+
+const DEFAULT_API_TIMEOUT = 5000 as const
+
+export function createRalphLoopHook(ctx: PluginInput, options?: RalphLoopOptions): RalphLoopHook {
+  const config = options?.config
+  const stateDir = config?.state_dir
+  const getTranscriptPath = options?.getTranscriptPath ?? ((id: string) => getDefaultTranscriptPath(id))
+  const apiTimeout = options?.apiTimeout ?? DEFAULT_API_TIMEOUT
+  const checkSessionExists = options?.checkSessionExists
+
+  const loopState = createLoopStateController({
+    directory: ctx.directory,
+    stateDir,
+    config,
+  })
+  const sessionRecovery = createLoopSessionRecovery()
+
+  const event = createRalphLoopEventHandler(ctx, {
+    directory: ctx.directory,
+    apiTimeoutMs: apiTimeout,
+    getTranscriptPath,
+    checkSessionExists,
+    sessionRecovery,
+    loopState,
+  })
+
+  return {
+    event,
+    startLoop: loopState.startLoop,
+    cancelLoop: loopState.cancelLoop,
+    getState: loopState.getState as () => RalphLoopState | null,
+  }
+}

src/ralph-loop/session-reset-strategy.ts

@@ -0,0 +1,69 @@
+import type { PluginInput } from "@opencode-ai/plugin"
+import { log } from "./logger"
+
+function isRecord(value: unknown): value is Record<string, unknown> {
+  return typeof value === "object" && value !== null
+}
+
+export async function createIterationSession(
+  ctx: PluginInput,
+  parentSessionID: string,
+  directory: string,
+): Promise<string | null> {
+  const sessionApi = ctx.client.session as unknown as {
+    create?: (args: {
+      body: { parentID: string; title?: string }
+      query?: { directory: string }
+    }) => Promise<unknown>
+  }
+  if (typeof sessionApi.create !== "function") return null
+
+  const createResult = await sessionApi.create({
+    body: { parentID: parentSessionID, title: "Ralph Loop Iteration" },
+    query: { directory },
+  })
+
+  const data = isRecord(createResult) ? (createResult.data as unknown) : undefined
+  const id = isRecord(data) ? (data.id as unknown) : undefined
+  const error = isRecord(createResult) ? createResult.error : undefined
+
+  if (error !== undefined || typeof id !== "string" || id.length === 0) {
+    log("[ralph-loop] Failed to create iteration session", {
+      parentSessionID,
+      error: String(error ?? "No session ID returned"),
+    })
+    return null
+  }
+
+  return id
+}
+
+export async function selectSessionInTui(
+  client: PluginInput["client"],
+  sessionID: string,
+): Promise<boolean> {
+  const selectSession = getSelectSessionApi(client)
+  if (!selectSession) return false
+
+  try {
+    await selectSession({ body: { sessionID } })
+    return true
+  } catch (error: unknown) {
+    log("[ralph-loop] Failed to select session in TUI", {
+      sessionID,
+      error: String(error),
+    })
+    return false
+  }
+}
+
+type SelectSessionApi = (args: { body: { sessionID: string } }) => Promise<unknown>
+
+function getSelectSessionApi(client: unknown): SelectSessionApi | null {
+  if (!isRecord(client)) return null
+  const tuiValue = client.tui
+  if (!isRecord(tuiValue)) return null
+  const selectSessionValue = tuiValue.selectSession
+  if (typeof selectSessionValue !== "function") return null
+  return (args) => Reflect.apply(selectSessionValue, tuiValue, [args]) as Promise<unknown>
+}

src/ralph-loop/simple-frontmatter.ts

@@ -0,0 +1,36 @@
+export function parseFrontmatter(content: string): {
+  data: Record<string, unknown>
+  body: string
+} {
+  const frontmatterRegex = /^---\r?\n([\s\S]*?)\r?\n?---\r?\n([\s\S]*)$/
+  const match = content.match(frontmatterRegex)
+  if (!match) {
+    return { data: {}, body: content }
+  }
+
+  const yaml = match[1] ?? ""
+  const body = match[2] ?? ""
+  const data: Record<string, unknown> = {}
+
+  for (const rawLine of yaml.split(/\r?\n/)) {
+    const line = rawLine.trim()
+    if (!line) continue
+    const m = line.match(/^([A-Za-z0-9_]+):\s*(.*)$/)
+    if (!m) continue
+    const key = m[1]
+    if (!key) continue
+    let value: unknown = m[2] ?? ""
+
+    if (typeof value === "string") {
+      const v = value.trim()
+      if (v === "true") value = true
+      else if (v === "false") value = false
+      else if (/^-?\d+(\.\d+)?$/.test(v)) value = Number(v)
+      else value = v
+    }
+
+    data[key] = value
+  }
+
+  return { data, body }
+}

src/ralph-loop/storage.ts

@@ -0,0 +1,96 @@
+import { existsSync, mkdirSync, readFileSync, unlinkSync, writeFileSync } from "node:fs"
+import { dirname, join } from "node:path"
+
+import type { RalphLoopState } from "./types"
+import {
+  DEFAULT_COMPLETION_PROMISE,
+  DEFAULT_MAX_ITERATIONS,
+  DEFAULT_STATE_FILE,
+} from "./constants"
+import { parseFrontmatter } from "./simple-frontmatter"
+
+export function getStateFilePath(directory: string, customPath?: string): string {
+  return customPath ? join(directory, customPath) : join(directory, DEFAULT_STATE_FILE)
+}
+
+export function readState(directory: string, customPath?: string): RalphLoopState | null {
+  const filePath = getStateFilePath(directory, customPath)
+  if (!existsSync(filePath)) return null
+
+  try {
+    const content = readFileSync(filePath, "utf-8")
+    const { data, body } = parseFrontmatter(content)
+
+    const active = (data.active as unknown)
+    const iteration = (data.iteration as unknown)
+
+    if (active === undefined || iteration === undefined) return null
+
+    const isActive = active === true || active === "true"
+    const iterationNum = typeof iteration === "number" ? iteration : Number(iteration)
+    if (Number.isNaN(iterationNum)) return null
+
+    const stripQuotes = (val: unknown): string => {
+      const str = String(val ?? "")
+      return str.replace(/^["']|["']$/g, "")
+    }
+
+    return {
+      active: isActive,
+      iteration: iterationNum,
+      max_iterations: Number(data.max_iterations) || DEFAULT_MAX_ITERATIONS,
+      completion_promise: stripQuotes(data.completion_promise) || DEFAULT_COMPLETION_PROMISE,
+      started_at: stripQuotes(data.started_at) || new Date().toISOString(),
+      prompt: body.trim(),
+      session_id: data.session_id ? stripQuotes(data.session_id) : undefined,
+      ultrawork:
+        data.ultrawork === true || data.ultrawork === "true" ? true : undefined,
+      strategy:
+        data.strategy === "reset" || data.strategy === "continue"
+          ? (data.strategy as "reset" | "continue")
+          : undefined,
+    }
+  } catch {
+    return null
+  }
+}
+
+export function writeState(directory: string, state: RalphLoopState, customPath?: string): boolean {
+  const filePath = getStateFilePath(directory, customPath)
+
+  try {
+    const dir = dirname(filePath)
+    if (!existsSync(dir)) {
+      mkdirSync(dir, { recursive: true })
+    }
+
+    const sessionIdLine = state.session_id ? `session_id: "${state.session_id}"\n` : ""
+    const ultraworkLine = state.ultrawork !== undefined ? `ultrawork: ${state.ultrawork}\n` : ""
+    const strategyLine = state.strategy ? `strategy: "${state.strategy}"\n` : ""
+    const content = `---\nactive: ${state.active}\niteration: ${state.iteration}\nmax_iterations: ${state.max_iterations}\ncompletion_promise: "${state.completion_promise}"\nstarted_at: "${state.started_at}"\n${sessionIdLine}${ultraworkLine}${strategyLine}---\n${state.prompt}\n`
+
+    writeFileSync(filePath, content, "utf-8")
+    return true
+  } catch {
+    return false
+  }
+}
+
+export function clearState(directory: string, customPath?: string): boolean {
+  const filePath = getStateFilePath(directory, customPath)
+  try {
+    if (existsSync(filePath)) {
+      unlinkSync(filePath)
+    }
+    return true
+  } catch {
+    return false
+  }
+}
+
+export function incrementIteration(directory: string, customPath?: string): RalphLoopState | null {
+  const state = readState(directory, customPath)
+  if (!state) return null
+  state.iteration += 1
+  return writeState(directory, state, customPath) ? state : null
+}

src/ralph-loop/system-directive.ts

@@ -0,0 +1 @@
+export const SYSTEM_DIRECTIVE_PREFIX = "[SYSTEM DIRECTIVE: OH-MY-OPENCODE"

src/ralph-loop/transcript.ts

@@ -0,0 +1,8 @@
+import { join } from "node:path"
+import { getClaudeConfigDir } from "./claude-config-dir"
+
+const TRANSCRIPT_DIR = join(getClaudeConfigDir(), "transcripts")
+
+export function getTranscriptPath(sessionId: string): string {
+  return join(TRANSCRIPT_DIR, `${sessionId}.jsonl`)
+}

src/ralph-loop/types.ts

@@ -0,0 +1,20 @@
+import type { RalphLoopConfig } from "./config"
+
+export interface RalphLoopState {
+  active: boolean
+  iteration: number
+  max_iterations: number
+  completion_promise: string
+  started_at: string
+  prompt: string
+  session_id?: string
+  ultrawork?: boolean
+  strategy?: "reset" | "continue"
+}
+
+export interface RalphLoopOptions {
+  config?: RalphLoopConfig
+  getTranscriptPath?: (sessionId: string) => string | undefined
+  apiTimeout?: number
+  checkSessionExists?: (sessionId: string) => Promise<boolean>
+}

src/ralph-loop/with-timeout.ts

@@ -0,0 +1,17 @@
+export async function withTimeout<TData>(promise: Promise<TData>, timeoutMs: number): Promise<TData> {
+  let timeoutId: ReturnType<typeof setTimeout> | undefined
+
+  const timeoutPromise = new Promise<never>((_, reject) => {
+    timeoutId = setTimeout(() => {
+      reject(new Error("API timeout"))
+    }, timeoutMs)
+  })
+
+  try {
+    return await Promise.race([promise, timeoutPromise])
+  } finally {
+    if (timeoutId !== undefined) {
+      clearTimeout(timeoutId)
+    }
+  }
+}

tsconfig.json

@@ -0,0 +1,16 @@
+{
+  "compilerOptions": {
+    "target": "ES2022",
+    "lib": ["ES2022"],
+    "module": "ESNext",
+    "moduleResolution": "Bundler",
+    "strict": true,
+    "skipLibCheck": true,
+    "declaration": true,
+    "emitDeclarationOnly": true,
+    "outDir": "dist",
+    "types": ["bun-types"],
+    "noUncheckedIndexedAccess": true
+  },
+  "include": ["src/**/*.ts"]
+}