fix(atlas): replace single task refusal directive

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

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

src/hooks/atlas/system-reminder-templates.test.ts

@@ -1,6 +1,7 @@
 import { describe, it, expect } from "bun:test"
 import {
   BOULDER_CONTINUATION_PROMPT,
+  SINGLE_TASK_DIRECTIVE,
   VERIFICATION_REMINDER,
   VERIFICATION_REMINDER_GEMINI,
 } from "./system-reminder-templates"
@@ -32,8 +33,8 @@ describe("BOULDER_CONTINUATION_PROMPT", () => {
       expect(checkboxMarkingMatch).not.toBeNull()
       expect(proceedMatch).not.toBeNull()
 
-      const checkboxPosition = checkboxMarkingMatch!.index
+      const checkboxPosition = checkboxMarkingMatch!.index ?? -1
-      const proceedPosition = proceedMatch!.index
+      const proceedPosition = proceedMatch!.index ?? -1
 
       expect(checkboxPosition).toBeLessThan(proceedPosition)
     })
@@ -51,3 +52,19 @@ describe("VERIFICATION_REMINDER_GEMINI", () => {
     expect(VERIFICATION_REMINDER_GEMINI).toContain(":!node_modules")
   })
 })
+
+describe("SINGLE_TASK_DIRECTIVE", () => {
+  it("does not contain refusal language", () => {
+    // given
+    const lowerCaseDirective = SINGLE_TASK_DIRECTIVE.toLowerCase()
+
+    // when / then
+    expect(lowerCaseDirective).not.toContain("refuse")
+    expect(SINGLE_TASK_DIRECTIVE).not.toContain("I refuse")
+  })
+
+  it("contains systematic execution guidance", () => {
+    expect(SINGLE_TASK_DIRECTIVE).toContain("EXECUTION PROTOCOL")
+    expect(SINGLE_TASK_DIRECTIVE).toContain("VERIFICATION IS MANDATORY")
+  })
+})

src/hooks/atlas/system-reminder-templates.ts

@@ -217,33 +217,26 @@ export const SINGLE_TASK_DIRECTIVE = `
 
 ${createSystemDirective(SystemDirectiveTypes.SINGLE_TASK_ONLY)}
 
-**STOP. READ THIS BEFORE PROCEEDING.**
+**EXECUTION PROTOCOL**
 
-If you were given **multiple genuinely independent goals** (unrelated tasks, parallel workstreams, separate features), you MUST:
+Work systematically. Each unit must be verified before proceeding.
-1. **IMMEDIATELY REFUSE** this request
-2. **DEMAND** the orchestrator provide a single goal
 
-**What counts as multiple independent tasks (REFUSE):**
+━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
-- "Implement feature A. Also, add feature B."
-- "Fix bug X. Then refactor module Y. Also update the docs."
-- Multiple unrelated changes bundled into one request
 
-**What is a single task with sequential steps (PROCEED):**
+| Step | Action | Verification |
-- A single goal broken into numbered steps (e.g., "Implement X by: 1. finding files, 2. adding logic, 3. writing tests")
+|------|--------|--------------|
-- Multi-step context where all steps serve ONE objective
+| 1 | Identify first atomic unit | Smallest complete piece of work |
-- Orchestrator-provided context explaining approach for a single deliverable
+| 2 | Execute fully | Implement the change |
+| 3 | Verify | \`lsp_diagnostics\`, tests, build |
+| 4 | Report | State what's done, what remains |
+| 5 | Continue | Next unit, or await if scope unclear |
 
-**Your response if genuinely independent tasks are detected:**
+━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
-> "I refuse to proceed. You provided multiple independent tasks. Each task needs full attention.
-> 
-> PROVIDE EXACTLY ONE GOAL. One deliverable. One clear outcome.
-> 
-> Batching unrelated tasks causes: incomplete work, missed edge cases, broken tests, wasted context."
 
-**WARNING TO ORCHESTRATOR:**
+**VERIFICATION IS MANDATORY.** No skipping. No batching completions.
-- Bundling unrelated tasks RUINS deliverables
-- Each independent goal needs FULL attention and PROPER verification
-- Batch delegation of separate concerns = sloppy work = rework = wasted tokens
 
-**REFUSE genuinely multi-task requests. ALLOW single-goal multi-step workflows.**
+**IF SCOPE SEEMS BROAD:**
+Complete the first logical unit. Report progress. Await further instruction if needed.
+
+**REMEMBER:** Prometheus already decomposed the work. Execute what you receive.
 `