feat(athena): expand council intent system from 4 to 8 intents

Add DIAGNOSE, CREATE, PERSPECTIVES, FREEFORM intents to Athena's council
classification system. Refine existing AUDIT (add DIAGNOSE boundary),
EVALUATE (improve criteria guidance), and EXPLAIN (remove catch-all status).

Fix bug where prepare_council_prompt defaulted to AUDIT when no intent was
specified — this caused analytical frameworks to be injected into creative
requests (e.g. poetry). Now defaults to no addendum.

Derive validIntents from Object.keys(COUNCIL_INTENT_ADDENDUMS) to prevent
drift between the addendums record and the validation array.

src/tools/prepare-council-prompt/tools.ts

@@ -45,10 +45,16 @@ The "mode" parameter controls whether council members can delegate exploration t
 - "delegation": Members can delegate to explore/librarian agents. Faster, lighter context.
 
 The "intent" parameter controls the analysis framework injected into the prompt:
-- "AUDIT" (default): Find issues, risks, violations with severity ratings.
-- "EVALUATE": Compare options against criteria, surface tradeoffs.
+- "DIAGNOSE": Trace a specific problem to its root cause through systematic investigation.
+- "AUDIT": Find issues, risks, violations with severity ratings (broad sweep).
 - "PLAN": Define current state, target state, phased path.
+- "EVALUATE": Compare options against criteria, surface tradeoffs.
 - "EXPLAIN": Build understanding of mechanisms and relationships.
+- "CREATE": Produce a deliverable directly (code, prose, design, spec).
+- "PERSPECTIVES": Surface genuine viewpoints, argue each at its strongest, take a position.
+- "FREEFORM": No analytical framework imposed — respond naturally.
+
+If no intent is specified, no analysis framework is injected.
 
 Returns the file path to reference in subsequent task() calls.`
 
@@ -61,7 +67,7 @@ Returns the file path to reference in subsequent task() calls.`
     args: {
       prompt: tool.schema.string().describe("The full analysis prompt/question for council members"),
       mode: tool.schema.string().optional().describe('Analysis mode: "solo" (default) or "delegation"'),
-      intent: tool.schema.string().optional().describe('Question intent: "AUDIT", "EVALUATE", "PLAN", "EXPLAIN"'),
+      intent: tool.schema.string().optional().describe('Question intent: "DIAGNOSE", "AUDIT", "PLAN", "EVALUATE", "EXPLAIN", "CREATE", "PERSPECTIVES", "FREEFORM"'),
     },
     async execute(args: { prompt: string; mode?: string; intent?: string }) {
       if (!args.prompt?.trim()) {
@@ -72,12 +78,12 @@ Returns the file path to reference in subsequent task() calls.`
         return `Invalid mode: "${args.mode}". Valid modes: "solo", "delegation".`
       }
 
-      const validIntents = ["AUDIT", "EVALUATE", "PLAN", "EXPLAIN"]
+      const validIntents = Object.keys(COUNCIL_INTENT_ADDENDUMS)
       if (args.intent !== undefined && !validIntents.includes(args.intent.toUpperCase())) {
-        return `Invalid intent: "${args.intent}". Valid intents: "AUDIT", "EVALUATE", "PLAN", "EXPLAIN".`
+        return `Invalid intent: "${args.intent}". Valid intents: ${validIntents.map((i) => `"${i}"`).join(", ")}.`
       }
 
-      const resolvedIntent = args.intent?.toUpperCase() ?? "AUDIT"
+      const resolvedIntent = args.intent?.toUpperCase()
 
       const mode = args.mode === "delegation" ? "delegation" : "solo"
 
@@ -89,14 +95,10 @@ Returns the file path to reference in subsequent task() calls.`
         const filePath = join(tmpDir, filename)
 
         const modeAddendum = mode === "delegation" ? COUNCIL_DELEGATION_ADDENDUM : COUNCIL_SOLO_ADDENDUM
-        const intentAddendum = COUNCIL_INTENT_ADDENDUMS[resolvedIntent] ?? COUNCIL_INTENT_ADDENDUMS["AUDIT"]
-        const content = `${modeAddendum}
-
-${intentAddendum}
-
-## Analysis Question
-
-${args.prompt}`
+        const intentAddendum = resolvedIntent ? (COUNCIL_INTENT_ADDENDUMS[resolvedIntent] ?? "") : ""
+        const content = intentAddendum
+          ? `${modeAddendum}\n\n${intentAddendum}\n\n## Analysis Question\n\n${args.prompt}`
+          : `${modeAddendum}\n\n## Analysis Question\n\n${args.prompt}`
 
         await writeFile(filePath, content, "utf-8")
 
@@ -108,7 +110,7 @@ ${args.prompt}`
 
         log("[prepare-council-prompt] Saved prompt", { filePath, length: args.prompt.length, mode })
 
-        return `Council prompt saved to: ${filePath} (mode: ${mode}, intent: ${resolvedIntent})
+        return `Council prompt saved to: ${filePath} (mode: ${mode}, intent: ${resolvedIntent ?? "none"})
 
 Use this path in each council member's task() call:
 - prompt: "Read ${filePath} for your instructions."