feat(coding-agent): introduced fine grained per agent advisor configuration

- Replaced blanket subagent advisor global settings with fine-grained per-agent configuration and frontmatter support.
- Added dashboard keybindings and inline override editors for managing agent advisor patterns.
- Implemented settings migration logic to convert legacy global options into per-agent settings.
- Updated session persistence and execution layers to restore and enforce per-agent advisor behaviors.

packages/coding-agent/src/session/agent-session.ts

@@ -1436,7 +1436,6 @@ export class AgentSession {
 			onPayload: this.#onPayload,
 			onResponse: this.#onResponse,
 			onSseEvent: this.#onSseEvent,
-			agentKind: () => this.#agentKind,
 			isDisposed: () => this.#isDisposed,
 			abortInProgress: () => this.#abortInProgress,
 			allowAgentInitiatedTurns: () => this.#allowAcpAgentInitiatedTurns,
@@ -9188,9 +9187,10 @@ export class AgentSession {
 
 	/**
 	 * Whether a live advisor agent is attached to this session. True only when
-	 * `advisor.enabled` is set AND a model resolved for the `advisor` role AND
-	 * the advisor applies to this agent kind — i.e. the actual runtime exists,
-	 * not merely the setting. Drives the status-line badge and `/dump advisor`.
+	 * `advisor.enabled` is set for this session (subagents opt in per agent via
+	 * frontmatter `advisor` / `task.agentAdvisor`) AND a model resolved for the
+	 * `advisor` role — i.e. the actual runtime exists, not merely the setting.
+	 * Drives the status-line badge and `/dump advisor`.
 	 */
 	isAdvisorActive(): boolean {
 		return this.#advisors.isAdvisorActive();

packages/coding-agent/src/session/session-advisors.ts

@@ -242,7 +242,6 @@ export interface SessionAdvisorsHost {
 	onPayload: SimpleStreamOptions["onPayload"] | undefined;
 	onResponse: SimpleStreamOptions["onResponse"] | undefined;
 	onSseEvent: SimpleStreamOptions["onSseEvent"] | undefined;
-	agentKind(): "main" | "sub";
 	isDisposed(): boolean;
 	abortInProgress(): boolean;
 	allowAgentInitiatedTurns(): boolean;
@@ -657,7 +656,6 @@ export class SessionAdvisors {
 		if (this.#host.isDisposed()) return false;
 		if (this.#advisors.length > 0) return true;
 		if (!this.#advisorEnabled) return false;
-		if (this.#host.agentKind() !== "main" && !this.#host.settings.get("advisor.subagents")) return false;
 
 		// Rebuild the status map from scratch so removed/renamed advisors don't
 		// leave stale entries. #resolveAdvisorRuntimeDescriptors populates every
@@ -1626,9 +1624,10 @@ export class SessionAdvisors {
 
 	/**
 	 * Whether a live advisor agent is attached to this session. True only when
-	 * `advisor.enabled` is set AND a model resolved for the `advisor` role AND
-	 * the advisor applies to this agent kind — i.e. the actual runtime exists,
-	 * not merely the setting. Drives the status-line badge and `/dump advisor`.
+	 * `advisor.enabled` is set for this session (subagents opt in per agent via
+	 * frontmatter `advisor` / `task.agentAdvisor`) AND a model resolved for the
+	 * `advisor` role — i.e. the actual runtime exists, not merely the setting.
+	 * Drives the status-line badge and `/dump advisor`.
 	 */
 	isAdvisorActive(): boolean {
 		return this.#advisors.length > 0;

packages/coding-agent/src/session/session-entries.ts

@@ -227,6 +227,8 @@ export interface SessionInitEntry extends SessionEntryBase {
 	spawns?: string;
 	/** The agent's `readSummarize` setting (`false` = read summarization disabled); absent uses the session default. */
 	readSummarize?: boolean;
+	/** Effective advisor for this subagent: `"on"` = advisor-role model, else an explicit model pattern; absent = unadvised. */
+	advisor?: string;
 }
 
 /** Mode change entry - tracks agent mode transitions (e.g. plan mode). */

packages/coding-agent/src/session/session-manager.ts

@@ -2142,6 +2142,7 @@ export class SessionManager {
 		restrictToolNames?: boolean;
 		spawns?: string;
 		readSummarize?: boolean;
+		advisor?: string;
 	}): string {
 		const entry: SessionInitEntry = { type: "session_init", ...this.#freshEntryFields(), ...init };
 		this.#recordEntry(entry);
@@ -2634,6 +2635,7 @@ export class SessionManager {
 			restrictToolNames?: boolean;
 			spawns?: string;
 			readSummarize?: boolean;
+			advisor?: string;
 		} | null;
 	} | null> {
 		let loaded: FileEntry[];
@@ -2657,6 +2659,7 @@ export class SessionManager {
 			restrictToolNames?: boolean;
 			spawns?: string;
 			readSummarize?: boolean;
+			advisor?: string;
 		} | null = null;
 		for (let index = loaded.length - 1; index >= 0; index--) {
 			const entry = loaded[index];
@@ -2673,6 +2676,7 @@ export class SessionManager {
 					restrictToolNames: entry.restrictToolNames,
 					readSummarize: entry.readSummarize,
 					spawns: entry.spawns,
+					advisor: entry.advisor,
 				};
 				break;
 			}