fix(athena): interpolate MIN_RESPONSE_LENGTH constant and add solo mode tests

src/agents/athena/council-member-agent.test.ts

@@ -1,5 +1,5 @@
 import { describe, expect, it } from "bun:test"
-import { COUNCIL_MEMBER_PROMPT, createCouncilMemberAgent } from "./council-member-agent"
+import { COUNCIL_MEMBER_PROMPT, COUNCIL_SOLO_ADDENDUM, createCouncilMemberAgent } from "./council-member-agent"
 
 describe("COUNCIL_MEMBER_PROMPT", () => {
   describe("#given the prompt constant", () => {
@@ -45,6 +45,24 @@ describe("COUNCIL_MEMBER_PROMPT", () => {
   })
 })
 
+describe("COUNCIL_SOLO_ADDENDUM", () => {
+  describe("#given the solo mode addendum", () => {
+    describe("#when checking for prohibition language", () => {
+      it("#then contains call_omo_agent (prohibition)", () => {
+        expect(COUNCIL_SOLO_ADDENDUM).toContain("call_omo_agent")
+      })
+
+      it("#then contains Do NOT (prohibition language)", () => {
+        expect(COUNCIL_SOLO_ADDENDUM).toContain("Do NOT")
+      })
+
+      it("#then contains ALL exploration yourself (self-reliance instruction)", () => {
+        expect(COUNCIL_SOLO_ADDENDUM).toContain("ALL exploration yourself")
+      })
+    })
+  })
+})
+
 describe("createCouncilMemberAgent", () => {
   describe("#given a model string", () => {
     describe("#when creating a council member agent", () => {

src/agents/athena/council-member-agent.ts

@@ -1,3 +1,4 @@
+import { MIN_RESPONSE_LENGTH } from "../../tools/council-archive/council-response-extractor"
 import type { AgentConfig } from "@opencode-ai/sdk"
 import type { AgentMode } from "../types"
 import { createAgentToolAllowlist } from "../../shared"
@@ -37,7 +38,7 @@ Your analysis here...
 </COUNCIL_MEMBER_RESPONSE>
 
 If you do not wrap your response in <COUNCIL_MEMBER_RESPONSE> tags, your analysis will not be included in the synthesis.
-Your response inside the tags must be at least 100 characters of substantive content. Empty or trivially short responses will be treated as missing and will not count toward quorum.`
+Your response inside the tags must be at least ${MIN_RESPONSE_LENGTH} characters of substantive content. Empty or trivially short responses will be treated as missing and will not count toward quorum.`
 
 export const COUNCIL_SOLO_ADDENDUM = `
 ## Solo Analysis Mode