perf(coding-agent): deferred heavy module imports to startup paths

- Lazy-loaded OTEL SDK, HTML export, TTSR, and autoresearch modules.
- Made resolveMemoryBackend async to import backends on demand.
- Replaced backend resolution with direct settings reads for rekey checks.

packages/coding-agent/src/modes/controllers/command-controller.ts

@@ -13,7 +13,6 @@ import { Loader, Markdown, padding, Spacer, Text, visibleWidth } from "@oh-my-pi
 import { formatDuration, Snowflake } from "@oh-my-pi/pi-utils";
 import { $ } from "bun";
 import { shouldEnableAppendOnlyContext } from "../../config/append-only-context-mode";
-import { loadCustomShare } from "../../export/custom-share";
 import type { CompactOptions } from "../../extensibility/extensions/types";
 import {
 	diffMentalModelContent,
@@ -131,6 +130,7 @@ export class CommandController {
 		}
 
 		try {
+			const { loadCustomShare } = await import("../../export/custom-share");
 			const customShare = await loadCustomShare();
 			if (customShare) {
 				const loader = new BorderedLoader(this.ctx.ui, theme, "Sharing...");
@@ -465,7 +465,7 @@ export class CommandController {
 		const argumentText = text.slice(7).trim();
 		const action = argumentText.split(/\s+/, 1)[0]?.toLowerCase() || "view";
 		const agentDir = this.ctx.settings.getAgentDir();
-		const backend = resolveMemoryBackend(this.ctx.settings);
+		const backend = await resolveMemoryBackend(this.ctx.settings);
 
 		if (action === "view") {
 			const payload = await backend.buildDeveloperInstructions(agentDir, this.ctx.settings, this.ctx.session);

packages/coding-agent/src/modes/controllers/selector-controller.ts

@@ -7,7 +7,6 @@ import { getAgentDbPath, getProjectDir, normalizePathForComparison } from "@oh-m
 import { getRoleInfo } from "../../config/model-registry";
 import { formatModelSelectorValue } from "../../config/model-resolver";
 import { settings } from "../../config/settings";
-import { DebugSelectorComponent } from "../../debug";
 import { disableProvider, enableProvider } from "../../discovery";
 import { clearPluginRootsAndCaches, resolveActiveProjectRegistryPath } from "../../discovery/helpers";
 import {
@@ -1080,7 +1079,8 @@ export class SelectorController {
 		});
 	}
 
-	showDebugSelector(): void {
+	async showDebugSelector(): Promise<void> {
+		const { DebugSelectorComponent } = await import("../../debug");
 		this.showSelector(done => {
 			const selector = new DebugSelectorComponent(this.ctx, done);
 			return { component: selector, focus: selector };

packages/coding-agent/src/modes/interactive-mode.ts

@@ -2844,8 +2844,8 @@ export class InteractiveMode implements InteractiveModeContext {
 		}
 	}
 
-	showDebugSelector(): void {
-		this.#selectorController.showDebugSelector();
+	async showDebugSelector(): Promise<void> {
+		await this.#selectorController.showDebugSelector();
 	}
 
 	showSessionObserver(): void {

packages/coding-agent/src/modes/types.ts

@@ -269,7 +269,7 @@ export interface InteractiveModeContext {
 	handleSessionDeleteCommand(): Promise<void>;
 	showOAuthSelector(mode: "login" | "logout", providerId?: string): Promise<void>;
 	showHookConfirm(title: string, message: string): Promise<boolean>;
-	showDebugSelector(): void;
+	showDebugSelector(): Promise<void>;
 	showSessionObserver(): void;
 	resetObserverRegistry(): void;