Enable more biome lints and fix things

biome.json

@@ -7,11 +7,7 @@
 			"style": {
 				"noNonNullAssertion": "off",
 				"useConst": "error",
-				"useNodejsImportProtocol": "off",
+				"useNodejsImportProtocol": "off"
-				"useTemplate": "off"
-			},
-			"correctness": {
-				"noUnusedVariables": "off"
 			},
 			"suspicious": {
 				"noExplicitAny": "off",

packages/ai/src/agent/agent-loop.ts

@@ -177,6 +177,7 @@ async function streamAssistantResponse(
 		systemPrompt: context.systemPrompt,
 		messages: [...processedMessages].map((m) => {
 			if (m.role === "toolResult") {
+				// biome-ignore lint/correctness/noUnusedVariables: fine here
 				const { details, ...rest } = m;
 				return rest;
 			} else {

packages/ai/src/agent/tools/calculate.ts

@@ -8,7 +8,7 @@ export interface CalculateResult extends AgentToolResult<undefined> {
 
 export function calculate(expression: string): CalculateResult {
 	try {
-		const result = new Function("return " + expression)();
+		const result = new Function(`return ${expression}`)();
 		return { content: [{ type: "text", text: `${expression} = ${result}` }], details: undefined };
 	} catch (e: any) {
 		throw new Error(e.message || String(e));

packages/ai/src/agent/tools/get-current-time.ts

@@ -17,7 +17,7 @@ export async function getCurrentTime(timezone?: string): Promise<GetCurrentTimeR
 				content: [{ type: "text", text: timeStr }],
 				details: { utcTimestamp: date.getTime() },
 			};
-		} catch (e) {
+		} catch (_e) {
 			throw new Error(`Invalid timezone: ${timezone}. Current UTC time: ${date.toISOString()}`);
 		}
 	}

packages/ai/src/providers/openai-responses.ts

@@ -110,7 +110,7 @@ export const streamOpenAIResponses: StreamFunction<"openai-responses"> = (
 						currentItem = item;
 						currentBlock = {
 							type: "toolCall",
-							id: item.call_id + "|" + item.id,
+							id: `${item.call_id}|${item.id}`,
 							name: item.name,
 							arguments: {},
 							partialJson: item.arguments || "",
@@ -251,7 +251,7 @@ export const streamOpenAIResponses: StreamFunction<"openai-responses"> = (
 					} else if (item.type === "function_call") {
 						const toolCall: ToolCall = {
 							type: "toolCall",
-							id: item.call_id + "|" + item.id,
+							id: `${item.call_id}|${item.id}`,
 							name: item.name,
 							arguments: JSON.parse(item.arguments),
 						};
@@ -462,9 +462,9 @@ function convertMessages(model: Model<"openai-responses">, context: Context): Re
 					// OpenAI requires id to be max 64 characters
 					let msgId = textBlock.textSignature;
 					if (!msgId) {
-						msgId = "msg_" + msgIndex;
+						msgId = `msg_${msgIndex}`;
 					} else if (msgId.length > 64) {
-						msgId = "msg_" + shortHash(msgId);
+						msgId = `msg_${shortHash(msgId)}`;
 					}
 					output.push({
 						type: "message",

packages/ai/src/utils/oauth/google-antigravity.ts

@@ -27,9 +27,6 @@ const SCOPES = [
 const AUTH_URL = "https://accounts.google.com/o/oauth2/v2/auth";
 const TOKEN_URL = "https://oauth2.googleapis.com/token";
 
-// Antigravity uses sandbox endpoint
-const CODE_ASSIST_ENDPOINT = "https://daily-cloudcode-pa.sandbox.googleapis.com";
-
 // Fallback project ID when discovery fails
 const DEFAULT_PROJECT_ID = "rising-fact-p41fc";
 
@@ -115,13 +112,6 @@ interface LoadCodeAssistPayload {
 	allowedTiers?: Array<{ id?: string; isDefault?: boolean }>;
 }
 
-/**
- * Wait helper for onboarding retries
- */
-function wait(ms: number): Promise<void> {
-	return new Promise((resolve) => setTimeout(resolve, ms));
-}
-
 /**
  * Discover or provision a project for the user
  */

packages/ai/src/utils/validation.ts

@@ -21,7 +21,7 @@ if (!isBrowserExtension) {
 			strict: false,
 		});
 		addFormats(ajv);
-	} catch (e) {
+	} catch (_e) {
 		// AJV initialization failed (likely CSP restriction)
 		console.warn("AJV validation disabled due to CSP restrictions");
 	}

packages/ai/test/agent.test.ts

@@ -215,7 +215,7 @@ async function abortTest<TApi extends Api>(model: Model<TApi>, options: OptionsF
 	const stream = agentLoop(userPrompt, context, config, abortController.signal);
 
 	// Abort after first tool execution
-	const abortPromise = (async () => {
+	(async () => {
 		for await (const event of stream) {
 			events.push(event);
 

packages/ai/test/context-overflow.test.ts

@@ -444,7 +444,7 @@ describe("Context overflow error handling", () => {
 				console.log("Pulling gpt-oss:20b model for Ollama overflow tests...");
 				try {
 					execSync("ollama pull gpt-oss:20b", { stdio: "inherit" });
-				} catch (e) {
+				} catch (_e) {
 					console.warn("Failed to pull gpt-oss:20b model, tests will be skipped");
 					return;
 				}

packages/ai/test/handoff.test.ts

@@ -554,7 +554,7 @@ describe("Cross-Provider Handoff Tests", () => {
 			let successCount = 0;
 			const totalTests = contextTests.length;
 
-			for (const { label, context, sourceModel } of contextTests) {
+			for (const { label, context } of contextTests) {
 				const success = await testProviderHandoff(model, label, context);
 				if (success) successCount++;
 			}

packages/ai/test/stream.test.ts

@@ -866,7 +866,7 @@ describe("Generate E2E Tests", () => {
 				console.log("Pulling gpt-oss:20b model for Ollama tests...");
 				try {
 					execSync("ollama pull gpt-oss:20b", { stdio: "inherit" });
-				} catch (e) {
+				} catch (_e) {
 					console.warn("Failed to pull gpt-oss:20b model, tests will be skipped");
 					return;
 				}

packages/ai/test/tool-call-without-result.test.ts

@@ -1,4 +1,4 @@
-import { type Static, Type } from "@sinclair/typebox";
+import { Type } from "@sinclair/typebox";
 import { describe, expect, it } from "vitest";
 import { getModel } from "../src/models.js";
 import { complete, resolveApiKey } from "../src/stream.js";
@@ -18,8 +18,6 @@ const calculateSchema = Type.Object({
 	expression: Type.String({ description: "The mathematical expression to evaluate" }),
 });
 
-type CalculateParams = Static<typeof calculateSchema>;
-
 const calculateTool: Tool = {
 	name: "calculate",
 	description: "Evaluate mathematical expressions",

packages/coding-agent/src/core/compaction.ts

@@ -420,7 +420,7 @@ export async function compact(
 			generateTurnPrefixSummary(turnPrefixMessages, model, settings.reserveTokens, apiKey, signal),
 		]);
 		// Merge into single summary
-		summary = historyResult + "\n\n---\n\n**Turn Context (split turn):**\n\n" + turnPrefixResult;
+		summary = `${historyResult}\n\n---\n\n**Turn Context (split turn):**\n\n${turnPrefixResult}`;
 	} else {
 		// Just generate history summary
 		summary = await generateSummary(

packages/coding-agent/src/core/export-html.ts

@@ -84,7 +84,7 @@ function escapeHtml(text: string): string {
 
 function shortenPath(path: string): string {
 	const home = homedir();
-	return path.startsWith(home) ? "~" + path.slice(home.length) : path;
+	return path.startsWith(home) ? `~${path.slice(home.length)}` : path;
 }
 
 function replaceTabs(text: string): string {

packages/coding-agent/src/core/messages.ts

@@ -54,7 +54,7 @@ export function isBashExecutionMessage(msg: AppMessage | Message): msg is BashEx
 export function bashExecutionToText(msg: BashExecutionMessage): string {
 	let text = `Ran \`${msg.command}\`\n`;
 	if (msg.output) {
-		text += "```\n" + msg.output + "\n```";
+		text += `\`\`\`\n${msg.output}\n\`\`\``;
 	} else {
 		text += "(no output)";
 	}

packages/coding-agent/src/core/model-config.ts

@@ -76,8 +76,6 @@ const ModelsConfigSchema = Type.Object({
 });
 
 type ModelsConfig = Static<typeof ModelsConfigSchema>;
-type ProviderConfig = Static<typeof ProviderConfigSchema>;
-type ModelDefinition = Static<typeof ModelDefinitionSchema>;
 
 // Custom provider API key mappings (provider name -> apiKey config)
 const customProviderApiKeys: Map<string, string> = new Map();

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

@@ -243,7 +243,7 @@ export class SessionManager {
 	private getSessionDirectory(): string {
 		const cwd = process.cwd();
 		// Replace all path separators and colons (for Windows drive letters) with dashes
-		const safePath = "--" + cwd.replace(/^[/\\]/, "").replace(/[/\\:]/g, "-") + "--";
+		const safePath = `--${cwd.replace(/^[/\\]/, "").replace(/[/\\:]/g, "-")}--`;
 
 		const configDir = getAgentDir();
 		const sessionDir = join(configDir, "sessions", safePath);
@@ -325,9 +325,9 @@ export class SessionManager {
 
 		// Write to file only if enabled
 		if (this.enabled) {
-			appendFileSync(this.sessionFile, JSON.stringify(entry) + "\n");
+			appendFileSync(this.sessionFile, `${JSON.stringify(entry)}\n`);
 			for (const memEntry of this.inMemoryEntries.slice(1)) {
-				appendFileSync(this.sessionFile, JSON.stringify(memEntry) + "\n");
+				appendFileSync(this.sessionFile, `${JSON.stringify(memEntry)}\n`);
 			}
 		}
 	}
@@ -346,7 +346,7 @@ export class SessionManager {
 			this.inMemoryEntries.push(entry);
 			// Write to file only if enabled
 			if (this.enabled) {
-				appendFileSync(this.sessionFile, JSON.stringify(entry) + "\n");
+				appendFileSync(this.sessionFile, `${JSON.stringify(entry)}\n`);
 			}
 		}
 	}
@@ -365,7 +365,7 @@ export class SessionManager {
 			this.inMemoryEntries.push(entry);
 			// Write to file only if enabled
 			if (this.enabled) {
-				appendFileSync(this.sessionFile, JSON.stringify(entry) + "\n");
+				appendFileSync(this.sessionFile, `${JSON.stringify(entry)}\n`);
 			}
 		}
 	}
@@ -385,7 +385,7 @@ export class SessionManager {
 			this.inMemoryEntries.push(entry);
 			// Write to file only if enabled
 			if (this.enabled) {
-				appendFileSync(this.sessionFile, JSON.stringify(entry) + "\n");
+				appendFileSync(this.sessionFile, `${JSON.stringify(entry)}\n`);
 			}
 		}
 	}
@@ -395,7 +395,7 @@ export class SessionManager {
 		this.inMemoryEntries.push(entry);
 		// Write to file only if enabled
 		if (this.enabled) {
-			appendFileSync(this.sessionFile, JSON.stringify(entry) + "\n");
+			appendFileSync(this.sessionFile, `${JSON.stringify(entry)}\n`);
 		}
 	}
 
@@ -625,7 +625,7 @@ export class SessionManager {
 			thinkingLevel: state.thinkingLevel,
 			branchedFrom: this.sessionFile,
 		};
-		appendFileSync(newSessionFile, JSON.stringify(entry) + "\n");
+		appendFileSync(newSessionFile, `${JSON.stringify(entry)}\n`);
 
 		// Write messages up to and including the branch point (if >= 0)
 		if (branchFromIndex >= 0) {
@@ -636,7 +636,7 @@ export class SessionManager {
 					timestamp: new Date().toISOString(),
 					message,
 				};
-				appendFileSync(newSessionFile, JSON.stringify(messageEntry) + "\n");
+				appendFileSync(newSessionFile, `${JSON.stringify(messageEntry)}\n`);
 			}
 		}
 
@@ -675,7 +675,7 @@ export class SessionManager {
 		if (this.enabled) {
 			// Write to file
 			for (const entry of newEntries) {
-				appendFileSync(newSessionFile, JSON.stringify(entry) + "\n");
+				appendFileSync(newSessionFile, `${JSON.stringify(entry)}\n`);
 			}
 			return newSessionFile;
 		} else {

packages/coding-agent/src/core/slash-commands.ts

@@ -153,12 +153,12 @@ function loadCommandsFromDir(dir: string, source: "user" | "project", subdir: st
 						content,
 						source: sourceStr,
 					});
-				} catch (error) {
+				} catch (_error) {
 					// Silently skip files that can't be read
 				}
 			}
 		}
-	} catch (error) {
+	} catch (_error) {
 		// Silently skip directories that can't be read
 	}
 

packages/coding-agent/src/core/tools/grep.ts

@@ -89,7 +89,7 @@ export const grepTool: AgentTool<typeof grepSchema> = {
 					let searchStat: Stats;
 					try {
 						searchStat = statSync(searchPath);
-					} catch (err) {
+					} catch (_err) {
 						settle(() => reject(new Error(`Path not found: ${searchPath}`)));
 						return;
 					}

packages/coding-agent/src/core/tools/read.ts

@@ -126,7 +126,6 @@ export const readTool: AgentTool<typeof readSchema> = {
 								details = { truncation };
 							} else if (userLimitedLines !== undefined && startLine + userLimitedLines < allLines.length) {
 								// User specified limit, there's more content, but no truncation
-								const endLineDisplay = startLineDisplay + userLimitedLines - 1;
 								const remaining = allLines.length - (startLine + userLimitedLines);
 								const nextOffset = startLine + userLimitedLines + 1;
 

packages/coding-agent/src/core/tools/truncate.ts

@@ -261,5 +261,5 @@ export function truncateLine(
 	if (line.length <= maxChars) {
 		return { text: line, wasTruncated: false };
 	}
-	return { text: line.slice(0, maxChars) + "... [truncated]", wasTruncated: true };
+	return { text: `${line.slice(0, maxChars)}... [truncated]`, wasTruncated: true };
 }

packages/coding-agent/src/modes/interactive/components/armin.ts

@@ -95,13 +95,13 @@ export class ArminComponent implements Component {
 			// Clip row to available width before applying color
 			const clipped = row.slice(0, availableWidth).join("");
 			const padRight = Math.max(0, width - padding - clipped.length);
-			return " " + theme.fg("accent", clipped) + " ".repeat(padRight);
+			return ` ${theme.fg("accent", clipped)}${" ".repeat(padRight)}`;
 		});
 
 		// Add "ARMIN SAYS HI" at the end
 		const message = "ARMIN SAYS HI";
 		const msgPadRight = Math.max(0, width - padding - message.length);
-		this.cachedLines.push(" " + theme.fg("accent", message) + " ".repeat(msgPadRight));
+		this.cachedLines.push(` ${theme.fg("accent", message)}${" ".repeat(msgPadRight)}`);
 
 		this.cachedWidth = width;
 		this.cachedVersion = this.gridVersion;

packages/coding-agent/src/modes/interactive/components/bash-execution.ts

@@ -132,11 +132,11 @@ export class BashExecutionComponent extends Container {
 			if (this.expanded) {
 				// Show all lines
 				const displayText = availableLines.map((line) => theme.fg("muted", line)).join("\n");
-				this.contentContainer.addChild(new Text("\n" + displayText, 1, 0));
+				this.contentContainer.addChild(new Text(`\n${displayText}`, 1, 0));
 			} else {
 				// Render preview lines, then cap at PREVIEW_LINES visual lines
 				const tempText = new Text(
-					"\n" + previewLogicalLines.map((line) => theme.fg("muted", line)).join("\n"),
+					`\n${previewLogicalLines.map((line) => theme.fg("muted", line)).join("\n")}`,
 					1,
 					0,
 				);
@@ -170,7 +170,7 @@ export class BashExecutionComponent extends Container {
 			}
 
 			if (statusParts.length > 0) {
-				this.contentContainer.addChild(new Text("\n" + statusParts.join("\n"), 1, 0));
+				this.contentContainer.addChild(new Text(`\n${statusParts.join("\n")}`, 1, 0));
 			}
 		}
 	}

packages/coding-agent/src/modes/interactive/components/footer.ts

@@ -168,17 +168,17 @@ export class FooterComponent implements Component {
 		// Format token counts (similar to web-ui)
 		const formatTokens = (count: number): string => {
 			if (count < 1000) return count.toString();
-			if (count < 10000) return (count / 1000).toFixed(1) + "k";
+			if (count < 10000) return `${(count / 1000).toFixed(1)}k`;
-			if (count < 1000000) return Math.round(count / 1000) + "k";
+			if (count < 1000000) return `${Math.round(count / 1000)}k`;
-			if (count < 10000000) return (count / 1000000).toFixed(1) + "M";
+			if (count < 10000000) return `${(count / 1000000).toFixed(1)}M`;
-			return Math.round(count / 1000000) + "M";
+			return `${Math.round(count / 1000000)}M`;
 		};
 
 		// Replace home directory with ~
 		let pwd = process.cwd();
 		const home = process.env.HOME || process.env.USERPROFILE;
 		if (home && pwd.startsWith(home)) {
-			pwd = "~" + pwd.slice(home.length);
+			pwd = `~${pwd.slice(home.length)}`;
 		}
 
 		// Add git branch if available
@@ -247,7 +247,7 @@ export class FooterComponent implements Component {
 		if (statsLeftWidth > width) {
 			// Truncate statsLeft to fit width (no room for right side)
 			const plainStatsLeft = statsLeft.replace(/\x1b\[[0-9;]*m/g, "");
-			statsLeft = plainStatsLeft.substring(0, width - 3) + "...";
+			statsLeft = `${plainStatsLeft.substring(0, width - 3)}...`;
 			statsLeftWidth = visibleWidth(statsLeft);
 		}
 

packages/coding-agent/src/modes/interactive/components/hook-selector.ts

@@ -58,7 +58,7 @@ export class HookSelectorComponent extends Container {
 			if (isSelected) {
 				text = theme.fg("accent", "→ ") + theme.fg("accent", option);
 			} else {
-				text = "  " + theme.fg("text", option);
+				text = `  ${theme.fg("text", option)}`;
 			}
 
 			this.listContainer.addChild(new Text(text, 1, 0));

packages/coding-agent/src/modes/interactive/components/model-selector.ts

@@ -175,12 +175,12 @@ export class ModelSelectorComponent extends Container {
 				const modelText = `${item.id}`;
 				const providerBadge = theme.fg("muted", `[${item.provider}]`);
 				const checkmark = isCurrent ? theme.fg("success", " ✓") : "";
-				line = prefix + theme.fg("accent", modelText) + " " + providerBadge + checkmark;
+				line = `${prefix + theme.fg("accent", modelText)} ${providerBadge}${checkmark}`;
 			} else {
 				const modelText = `  ${item.id}`;
 				const providerBadge = theme.fg("muted", `[${item.provider}]`);
 				const checkmark = isCurrent ? theme.fg("success", " ✓") : "";
-				line = modelText + " " + providerBadge + checkmark;
+				line = `${modelText} ${providerBadge}${checkmark}`;
 			}
 
 			this.listContainer.addChild(new Text(line, 0, 0));

packages/coding-agent/src/modes/interactive/components/tool-execution.ts

@@ -21,7 +21,7 @@ import { renderDiff } from "./diff.js";
 function shortenPath(path: string): string {
 	const home = os.homedir();
 	if (path.startsWith(home)) {
-		return "~" + path.slice(home.length);
+		return `~${path.slice(home.length)}`;
 	}
 	return path;
 }
@@ -269,7 +269,7 @@ export class ToolExecutionComponent extends Container {
 							);
 						}
 					}
-					text += "\n" + theme.fg("warning", `[${warnings.join(". ")}]`);
+					text += `\n${theme.fg("warning", `[${warnings.join(". ")}]`)}`;
 				}
 			}
 		} else if (this.toolName === "read") {
@@ -284,7 +284,7 @@ export class ToolExecutionComponent extends Container {
 				pathDisplay += theme.fg("warning", `:${startLine}${endLine ? `-${endLine}` : ""}`);
 			}
 
-			text = theme.fg("toolTitle", theme.bold("read")) + " " + pathDisplay;
+			text = `${theme.fg("toolTitle", theme.bold("read"))} ${pathDisplay}`;
 
 			if (this.result) {
 				const output = this.getTextOutput();
@@ -377,17 +377,17 @@ export class ToolExecutionComponent extends Container {
 				if (this.result.isError) {
 					const errorText = this.getTextOutput();
 					if (errorText) {
-						text += "\n\n" + theme.fg("error", errorText);
+						text += `\n\n${theme.fg("error", errorText)}`;
 					}
 				} else if (this.result.details?.diff) {
-					text += "\n\n" + renderDiff(this.result.details.diff, { filePath: rawPath });
+					text += `\n\n${renderDiff(this.result.details.diff, { filePath: rawPath })}`;
 				}
 			}
 		} else if (this.toolName === "ls") {
 			const path = shortenPath(this.args?.path || ".");
 			const limit = this.args?.limit;
 
-			text = theme.fg("toolTitle", theme.bold("ls")) + " " + theme.fg("accent", path);
+			text = `${theme.fg("toolTitle", theme.bold("ls"))} ${theme.fg("accent", path)}`;
 			if (limit !== undefined) {
 				text += theme.fg("toolOutput", ` (limit ${limit})`);
 			}
@@ -400,7 +400,7 @@ export class ToolExecutionComponent extends Container {
 					const displayLines = lines.slice(0, maxLines);
 					const remaining = lines.length - maxLines;
 
-					text += "\n\n" + displayLines.map((line: string) => theme.fg("toolOutput", line)).join("\n");
+					text += `\n\n${displayLines.map((line: string) => theme.fg("toolOutput", line)).join("\n")}`;
 					if (remaining > 0) {
 						text += theme.fg("toolOutput", `\n... (${remaining} more lines)`);
 					}
@@ -416,7 +416,7 @@ export class ToolExecutionComponent extends Container {
 					if (truncation?.truncated) {
 						warnings.push(`${formatSize(truncation.maxBytes ?? DEFAULT_MAX_BYTES)} limit`);
 					}
-					text += "\n" + theme.fg("warning", `[Truncated: ${warnings.join(", ")}]`);
+					text += `\n${theme.fg("warning", `[Truncated: ${warnings.join(", ")}]`)}`;
 				}
 			}
 		} else if (this.toolName === "find") {
@@ -441,7 +441,7 @@ export class ToolExecutionComponent extends Container {
 					const displayLines = lines.slice(0, maxLines);
 					const remaining = lines.length - maxLines;
 
-					text += "\n\n" + displayLines.map((line: string) => theme.fg("toolOutput", line)).join("\n");
+					text += `\n\n${displayLines.map((line: string) => theme.fg("toolOutput", line)).join("\n")}`;
 					if (remaining > 0) {
 						text += theme.fg("toolOutput", `\n... (${remaining} more lines)`);
 					}
@@ -457,7 +457,7 @@ export class ToolExecutionComponent extends Container {
 					if (truncation?.truncated) {
 						warnings.push(`${formatSize(truncation.maxBytes ?? DEFAULT_MAX_BYTES)} limit`);
 					}
-					text += "\n" + theme.fg("warning", `[Truncated: ${warnings.join(", ")}]`);
+					text += `\n${theme.fg("warning", `[Truncated: ${warnings.join(", ")}]`)}`;
 				}
 			}
 		} else if (this.toolName === "grep") {
@@ -486,7 +486,7 @@ export class ToolExecutionComponent extends Container {
 					const displayLines = lines.slice(0, maxLines);
 					const remaining = lines.length - maxLines;
 
-					text += "\n\n" + displayLines.map((line: string) => theme.fg("toolOutput", line)).join("\n");
+					text += `\n\n${displayLines.map((line: string) => theme.fg("toolOutput", line)).join("\n")}`;
 					if (remaining > 0) {
 						text += theme.fg("toolOutput", `\n... (${remaining} more lines)`);
 					}
@@ -506,7 +506,7 @@ export class ToolExecutionComponent extends Container {
 					if (linesTruncated) {
 						warnings.push("some lines truncated");
 					}
-					text += "\n" + theme.fg("warning", `[Truncated: ${warnings.join(", ")}]`);
+					text += `\n${theme.fg("warning", `[Truncated: ${warnings.join(", ")}]`)}`;
 				}
 			}
 		} else {
@@ -514,10 +514,10 @@ export class ToolExecutionComponent extends Container {
 			text = theme.fg("toolTitle", theme.bold(this.toolName));
 
 			const content = JSON.stringify(this.args, null, 2);
-			text += "\n\n" + content;
+			text += `\n\n${content}`;
 			const output = this.getTextOutput();
 			if (output) {
-				text += "\n" + output;
+				text += `\n${output}`;
 			}
 		}
 

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

@@ -239,7 +239,7 @@ export class InteractiveMode {
 			"\n" +
 			theme.fg("dim", "drop files") +
 			theme.fg("muted", " to attach");
-		const header = new Text(logo + "\n" + instructions, 1, 0);
+		const header = new Text(`${logo}\n${instructions}`, 1, 0);
 
 		// Setup UI layout
 		this.ui.addChild(new Spacer(1));
@@ -1340,7 +1340,7 @@ export class InteractiveMode {
 		if (queuedMessages.length > 0) {
 			this.pendingMessagesContainer.addChild(new Spacer(1));
 			for (const message of queuedMessages) {
-				const queuedText = theme.fg("dim", "Queued: " + message);
+				const queuedText = theme.fg("dim", `Queued: ${message}`);
 				this.pendingMessagesContainer.addChild(new TruncatedText(queuedText, 1, 0));
 			}
 		}
@@ -1808,7 +1808,7 @@ export class InteractiveMode {
 
 		this.chatContainer.addChild(new Spacer(1));
 		this.chatContainer.addChild(
-			new Text(theme.fg("accent", "✓ Context cleared") + "\n" + theme.fg("muted", "Started fresh session"), 1, 1),
+			new Text(`${theme.fg("accent", "✓ Context cleared")}\n${theme.fg("muted", "Started fresh session")}`, 1, 1),
 		);
 		this.ui.requestRender();
 	}
@@ -1840,7 +1840,7 @@ export class InteractiveMode {
 
 		this.chatContainer.addChild(new Spacer(1));
 		this.chatContainer.addChild(
-			new Text(theme.fg("accent", "✓ Debug log written") + "\n" + theme.fg("muted", debugLogPath), 1, 1),
+			new Text(`${theme.fg("accent", "✓ Debug log written")}\n${theme.fg("muted", debugLogPath)}`, 1, 1),
 		);
 		this.ui.requestRender();
 	}

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

@@ -534,7 +534,7 @@ export function initTheme(themeName?: string, enableWatcher: boolean = false): v
 		if (enableWatcher) {
 			startThemeWatcher();
 		}
-	} catch (error) {
+	} catch (_error) {
 		// Theme is invalid - fall back to dark theme silently
 		currentThemeName = "dark";
 		theme = loadTheme("dark");
@@ -598,7 +598,7 @@ function startThemeWatcher(): void {
 						if (onThemeChangeCallback) {
 							onThemeChangeCallback();
 						}
-					} catch (error) {
+					} catch (_error) {
 						// Ignore errors (file might be in invalid state while being edited)
 					}
 				}, 100);
@@ -619,7 +619,7 @@ function startThemeWatcher(): void {
 				}, 100);
 			}
 		});
-	} catch (error) {
+	} catch (_error) {
 		// Ignore errors starting watcher
 	}
 }

packages/coding-agent/src/modes/rpc/rpc-client.ts

@@ -456,7 +456,7 @@ export class RpcClient {
 				},
 			});
 
-			this.process!.stdin!.write(JSON.stringify(fullCommand) + "\n");
+			this.process!.stdin!.write(`${JSON.stringify(fullCommand)}\n`);
 		});
 	}
 

packages/coding-agent/src/utils/shell.ts

@@ -44,7 +44,7 @@ export function getShellConfig(): { shell: string; args: string[] } {
 			return cachedShellConfig;
 		}
 		throw new Error(
-			`Custom shell path not found: ${customShellPath}\n` + `Please update shellPath in ~/.pi/agent/settings.json`,
+			`Custom shell path not found: ${customShellPath}\nPlease update shellPath in ~/.pi/agent/settings.json`,
 		);
 	}
 

packages/coding-agent/test/skills.test.ts

@@ -106,7 +106,7 @@ describe("skills", () => {
 		});
 
 		it("should load all skills from fixture directory", () => {
-			const { skills, warnings } = loadSkillsFromDir({
+			const { skills } = loadSkillsFromDir({
 				dir: fixturesDir,
 				source: "test",
 			});

packages/mom/src/agent.ts

@@ -20,26 +20,6 @@ import { createMomTools, setUploadFunction } from "./tools/index.js";
 // Hardcoded model for now - TODO: make configurable (issue #63)
 const model = getModel("anthropic", "claude-sonnet-4-5");
 
-/**
- * Convert Date.now() to Slack timestamp format (seconds.microseconds)
- * Uses a monotonic counter to ensure ordering even within the same millisecond
- */
-let lastTsMs = 0;
-let tsCounter = 0;
-
-function toSlackTs(): string {
-	const now = Date.now();
-	if (now === lastTsMs) {
-		tsCounter++;
-	} else {
-		lastTsMs = now;
-		tsCounter = 0;
-	}
-	const seconds = Math.floor(now / 1000);
-	const micros = (now % 1000) * 1000 + tsCounter;
-	return `${seconds}.${micros.toString().padStart(6, "0")}`;
-}
-
 export interface PendingMessage {
 	userName: string;
 	text: string;
@@ -85,7 +65,7 @@ function getMemory(channelDir: string): string {
 		try {
 			const content = readFileSync(workspaceMemoryPath, "utf-8").trim();
 			if (content) {
-				parts.push("### Global Workspace Memory\n" + content);
+				parts.push(`### Global Workspace Memory\n${content}`);
 			}
 		} catch (error) {
 			log.logWarning("Failed to read workspace memory", `${workspaceMemoryPath}: ${error}`);
@@ -98,7 +78,7 @@ function getMemory(channelDir: string): string {
 		try {
 			const content = readFileSync(channelMemoryPath, "utf-8").trim();
 			if (content) {
-				parts.push("### Channel-Specific Memory\n" + content);
+				parts.push(`### Channel-Specific Memory\n${content}`);
 			}
 		} catch (error) {
 			log.logWarning("Failed to read channel memory", `${channelMemoryPath}: ${error}`);
@@ -340,7 +320,7 @@ Each tool requires a "label" parameter (shown to user).
 
 function truncate(text: string, maxLen: number): string {
 	if (text.length <= maxLen) return text;
-	return text.substring(0, maxLen - 3) + "...";
+	return `${text.substring(0, maxLen - 3)}...`;
 }
 
 function extractToolResultText(result: unknown): string {
@@ -530,8 +510,8 @@ function createRunner(sandboxConfig: SandboxConfig, channelId: string, channelDi
 			let threadMessage = `*${agentEvent.isError ? "✗" : "✓"} ${agentEvent.toolName}*`;
 			if (label) threadMessage += `: ${label}`;
 			threadMessage += ` (${duration}s)\n`;
-			if (argsFormatted) threadMessage += "```\n" + argsFormatted + "\n```\n";
+			if (argsFormatted) threadMessage += `\`\`\`\n${argsFormatted}\n\`\`\`\n`;
-			threadMessage += "*Result:*\n```\n" + resultStr + "\n```";
+			threadMessage += `*Result:*\n\`\`\`\n${resultStr}\n\`\`\``;
 
 			queue.enqueueMessage(threadMessage, "thread", "tool result thread", false);
 
@@ -804,7 +784,7 @@ function createRunner(sandboxConfig: SandboxConfig, channelId: string, channelDi
 					try {
 						const mainText =
 							finalText.length > SLACK_MAX_LENGTH
-								? finalText.substring(0, SLACK_MAX_LENGTH - 50) + "\n\n_(see thread for full response)_"
+								? `${finalText.substring(0, SLACK_MAX_LENGTH - 50)}\n\n_(see thread for full response)_`
 								: finalText;
 						await ctx.replaceMessage(mainText);
 					} catch (err) {

packages/mom/src/context.ts

@@ -92,7 +92,7 @@ export class MomSessionManager {
 		};
 
 		this.inMemoryEntries.push(entry);
-		appendFileSync(this.contextFile, JSON.stringify(entry) + "\n");
+		appendFileSync(this.contextFile, `${JSON.stringify(entry)}\n`);
 	}
 
 	/**
@@ -215,7 +215,7 @@ export class MomSessionManager {
 			};
 
 			this.inMemoryEntries.push(entry);
-			appendFileSync(this.contextFile, JSON.stringify(entry) + "\n");
+			appendFileSync(this.contextFile, `${JSON.stringify(entry)}\n`);
 		}
 	}
 
@@ -270,9 +270,9 @@ export class MomSessionManager {
 		this.pendingEntries = [];
 
 		// Write to file
-		appendFileSync(this.contextFile, JSON.stringify(entry) + "\n");
+		appendFileSync(this.contextFile, `${JSON.stringify(entry)}\n`);
 		for (const memEntry of this.inMemoryEntries.slice(1)) {
-			appendFileSync(this.contextFile, JSON.stringify(memEntry) + "\n");
+			appendFileSync(this.contextFile, `${JSON.stringify(memEntry)}\n`);
 		}
 	}
 
@@ -287,7 +287,7 @@ export class MomSessionManager {
 			this.pendingEntries.push(entry);
 		} else {
 			this.inMemoryEntries.push(entry);
-			appendFileSync(this.contextFile, JSON.stringify(entry) + "\n");
+			appendFileSync(this.contextFile, `${JSON.stringify(entry)}\n`);
 		}
 	}
 
@@ -302,7 +302,7 @@ export class MomSessionManager {
 			this.pendingEntries.push(entry);
 		} else {
 			this.inMemoryEntries.push(entry);
-			appendFileSync(this.contextFile, JSON.stringify(entry) + "\n");
+			appendFileSync(this.contextFile, `${JSON.stringify(entry)}\n`);
 		}
 	}
 
@@ -318,13 +318,13 @@ export class MomSessionManager {
 			this.pendingEntries.push(entry);
 		} else {
 			this.inMemoryEntries.push(entry);
-			appendFileSync(this.contextFile, JSON.stringify(entry) + "\n");
+			appendFileSync(this.contextFile, `${JSON.stringify(entry)}\n`);
 		}
 	}
 
 	saveCompaction(entry: CompactionEntry): void {
 		this.inMemoryEntries.push(entry);
-		appendFileSync(this.contextFile, JSON.stringify(entry) + "\n");
+		appendFileSync(this.contextFile, `${JSON.stringify(entry)}\n`);
 	}
 
 	/** Load session with compaction support */
@@ -587,7 +587,6 @@ export function syncLogToContext(channelDir: string, excludeAfterTs?: string): n
 	if (logMessages.length === 0) return 0;
 
 	// Read existing timestamps from context.jsonl
-	const existingTs = new Set<string>();
 	if (existsSync(contextFile)) {
 		const contextContent = readFileSync(contextFile, "utf-8");
 		const contextLines = contextContent.trim().split("\n").filter(Boolean);
@@ -656,7 +655,7 @@ export function syncLogToContext(channelDir: string, excludeAfterTs?: string): n
 			mkdirSync(channelDir, { recursive: true });
 		}
 
-		appendFileSync(contextFile, JSON.stringify(entry) + "\n");
+		appendFileSync(contextFile, `${JSON.stringify(entry)}\n`);
 		existingMessages.add(content); // Track to avoid duplicates within this sync
 		syncedCount++;
 	}

packages/mom/src/log.ts

@@ -27,7 +27,7 @@ function formatContext(ctx: LogContext): string {
 
 function truncate(text: string, maxLen: number): string {
 	if (text.length <= maxLen) return text;
-	return text.substring(0, maxLen) + `\n(truncated at ${maxLen} chars)`;
+	return `${text.substring(0, maxLen)}\n(truncated at ${maxLen} chars)`;
 }
 
 function formatToolArgs(args: Record<string, unknown>): string {
@@ -200,9 +200,9 @@ export function logUsageSummary(
 ): string {
 	const formatTokens = (count: number): string => {
 		if (count < 1000) return count.toString();
-		if (count < 10000) return (count / 1000).toFixed(1) + "k";
+		if (count < 10000) return `${(count / 1000).toFixed(1)}k`;
-		if (count < 1000000) return Math.round(count / 1000) + "k";
+		if (count < 1000000) return `${Math.round(count / 1000)}k`;
-		return (count / 1000000).toFixed(1) + "M";
+		return `${(count / 1000000).toFixed(1)}M`;
 	};
 
 	const lines: string[] = [];

packages/mom/src/main.ts

@@ -144,7 +144,7 @@ function createSlackContext(event: SlackEvent, slack: SlackBot, state: ChannelSt
 
 		respond: async (text: string, shouldLog = true) => {
 			updatePromise = updatePromise.then(async () => {
-				accumulatedText = accumulatedText ? accumulatedText + "\n" + text : text;
+				accumulatedText = accumulatedText ? `${accumulatedText}\n${text}` : text;
 				const displayText = isWorking ? accumulatedText + workingIndicator : accumulatedText;
 
 				if (messageTs) {

packages/mom/src/slack.ts

@@ -220,7 +220,7 @@ export class SlackBot {
 	logToFile(channel: string, entry: object): void {
 		const dir = join(this.workingDir, channel);
 		if (!existsSync(dir)) mkdirSync(dir, { recursive: true });
-		appendFileSync(join(dir, "log.jsonl"), JSON.stringify(entry) + "\n");
+		appendFileSync(join(dir, "log.jsonl"), `${JSON.stringify(entry)}\n`);
 	}
 
 	/**

packages/mom/src/store.ts

@@ -139,7 +139,7 @@ export class ChannelStore {
 			message.date = date.toISOString();
 		}
 
-		const line = JSON.stringify(message) + "\n";
+		const line = `${JSON.stringify(message)}\n`;
 		await appendFile(logPath, line, "utf-8");
 		return true;
 	}

packages/pods/src/commands/models.ts

@@ -207,7 +207,7 @@ export const startModel = async (
 		.replace("{{VLLM_ARGS}}", vllmArgs.join(" "));
 
 	// Upload customized script
-	const result = await sshExec(
+	await sshExec(
 		pod.ssh,
 		`cat > /tmp/model_run_${name}.sh << 'EOF'
 ${scriptContent}
@@ -341,7 +341,7 @@ WRAPPER
 
 	if (startupFailed) {
 		// Model failed to start - clean up and report error
-		console.log("\n" + chalk.red(`✗ Model failed to start: ${failureReason}`));
+		console.log(`\n${chalk.red(`✗ Model failed to start: ${failureReason}`)}`);
 
 		// Remove the failed model from config
 		const config = loadConfig();
@@ -352,7 +352,7 @@ WRAPPER
 
 		// Provide helpful suggestions based on failure reason
 		if (failureReason.includes("OOM") || failureReason.includes("memory")) {
-			console.log("\n" + chalk.bold("Suggestions:"));
+			console.log(`\n${chalk.bold("Suggestions:")}`);
 			console.log("  • Try reducing GPU memory utilization: --memory 50%");
 			console.log("  • Use a smaller context window: --context 4k");
 			console.log("  • Use a quantized version of the model (e.g., FP8)");
@@ -360,24 +360,24 @@ WRAPPER
 			console.log("  • Try a smaller model variant");
 		}
 
-		console.log("\n" + chalk.cyan('Check full logs: pi ssh "tail -100 ~/.vllm_logs/' + name + '.log"'));
+		console.log(`\n${chalk.cyan(`Check full logs: pi ssh "tail -100 ~/.vllm_logs/${name}.log"`)}`);
 		process.exit(1);
 	} else if (startupComplete) {
 		// Model started successfully - output connection details
-		console.log("\n" + chalk.green("✓ Model started successfully!"));
+		console.log(`\n${chalk.green("✓ Model started successfully!")}`);
-		console.log("\n" + chalk.bold("Connection Details:"));
+		console.log(`\n${chalk.bold("Connection Details:")}`);
 		console.log(chalk.cyan("─".repeat(50)));
 		console.log(chalk.white("Base URL:    ") + chalk.yellow(`http://${host}:${port}/v1`));
 		console.log(chalk.white("Model:       ") + chalk.yellow(modelId));
 		console.log(chalk.white("API Key:     ") + chalk.yellow(process.env.PI_API_KEY || "(not set)"));
 		console.log(chalk.cyan("─".repeat(50)));
 
-		console.log("\n" + chalk.bold("Export for shell:"));
+		console.log(`\n${chalk.bold("Export for shell:")}`);
 		console.log(chalk.gray(`export OPENAI_BASE_URL="http://${host}:${port}/v1"`));
 		console.log(chalk.gray(`export OPENAI_API_KEY="${process.env.PI_API_KEY || "your-api-key"}"`));
 		console.log(chalk.gray(`export OPENAI_MODEL="${modelId}"`));
 
-		console.log("\n" + chalk.bold("Example usage:"));
+		console.log(`\n${chalk.bold("Example usage:")}`);
 		console.log(
 			chalk.gray(`
   # Python

packages/tui/src/autocomplete.ts

@@ -202,7 +202,7 @@ export class CombinedAutocompleteProvider implements AutocompleteProvider {
 		const isSlashCommand = prefix.startsWith("/") && beforePrefix.trim() === "" && !prefix.slice(1).includes("/");
 		if (isSlashCommand) {
 			// This is a command name completion
-			const newLine = beforePrefix + "/" + item.value + " " + afterCursor;
+			const newLine = `${beforePrefix}/${item.value} ${afterCursor}`;
 			const newLines = [...lines];
 			newLines[cursorLine] = newLine;
 
@@ -216,7 +216,7 @@ export class CombinedAutocompleteProvider implements AutocompleteProvider {
 		// Check if we're completing a file attachment (prefix starts with "@")
 		if (prefix.startsWith("@")) {
 			// This is a file attachment completion
-			const newLine = beforePrefix + item.value + " " + afterCursor;
+			const newLine = `${beforePrefix + item.value} ${afterCursor}`;
 			const newLines = [...lines];
 			newLines[cursorLine] = newLine;
 
@@ -299,7 +299,7 @@ export class CombinedAutocompleteProvider implements AutocompleteProvider {
 		if (path.startsWith("~/")) {
 			const expandedPath = join(homedir(), path.slice(2));
 			// Preserve trailing slash if original path had one
-			return path.endsWith("/") && !expandedPath.endsWith("/") ? expandedPath + "/" : expandedPath;
+			return path.endsWith("/") && !expandedPath.endsWith("/") ? `${expandedPath}/` : expandedPath;
 		} else if (path === "~") {
 			return homedir();
 		}
@@ -387,20 +387,20 @@ export class CombinedAutocompleteProvider implements AutocompleteProvider {
 				if (isAtPrefix) {
 					const pathWithoutAt = expandedPrefix;
 					if (pathWithoutAt.endsWith("/")) {
-						relativePath = "@" + pathWithoutAt + name;
+						relativePath = `@${pathWithoutAt}${name}`;
 					} else if (pathWithoutAt.includes("/")) {
 						if (pathWithoutAt.startsWith("~/")) {
 							const homeRelativeDir = pathWithoutAt.slice(2); // Remove ~/
 							const dir = dirname(homeRelativeDir);
-							relativePath = "@~/" + (dir === "." ? name : join(dir, name));
+							relativePath = `@~/${dir === "." ? name : join(dir, name)}`;
 						} else {
-							relativePath = "@" + join(dirname(pathWithoutAt), name);
+							relativePath = `@${join(dirname(pathWithoutAt), name)}`;
 						}
 					} else {
 						if (pathWithoutAt.startsWith("~")) {
-							relativePath = "@~/" + name;
+							relativePath = `@~/${name}`;
 						} else {
-							relativePath = "@" + name;
+							relativePath = `@${name}`;
 						}
 					}
 				} else if (prefix.endsWith("/")) {
@@ -411,14 +411,14 @@ export class CombinedAutocompleteProvider implements AutocompleteProvider {
 					if (prefix.startsWith("~/")) {
 						const homeRelativeDir = prefix.slice(2); // Remove ~/
 						const dir = dirname(homeRelativeDir);
-						relativePath = "~/" + (dir === "." ? name : join(dir, name));
+						relativePath = `~/${dir === "." ? name : join(dir, name)}`;
 					} else if (prefix.startsWith("/")) {
 						// Absolute path - construct properly
 						const dir = dirname(prefix);
 						if (dir === "/") {
-							relativePath = "/" + name;
+							relativePath = `/${name}`;
 						} else {
-							relativePath = dir + "/" + name;
+							relativePath = `${dir}/${name}`;
 						}
 					} else {
 						relativePath = join(dirname(prefix), name);
@@ -426,14 +426,14 @@ export class CombinedAutocompleteProvider implements AutocompleteProvider {
 				} else {
 					// For standalone entries, preserve ~/ if original prefix was ~/
 					if (prefix.startsWith("~")) {
-						relativePath = "~/" + name;
+						relativePath = `~/${name}`;
 					} else {
 						relativePath = name;
 					}
 				}
 
 				suggestions.push({
-					value: isDirectory ? relativePath + "/" : relativePath,
+					value: isDirectory ? `${relativePath}/` : relativePath,
 					label: name,
 					description: isDirectory ? "directory" : "file",
 				});
@@ -449,7 +449,7 @@ export class CombinedAutocompleteProvider implements AutocompleteProvider {
 			});
 
 			return suggestions;
-		} catch (e) {
+		} catch (_e) {
 			// Directory doesn't exist or not accessible
 			return [];
 		}
@@ -509,7 +509,7 @@ export class CombinedAutocompleteProvider implements AutocompleteProvider {
 				const entryName = basename(pathWithoutSlash);
 
 				suggestions.push({
-					value: "@" + entryPath,
+					value: `@${entryPath}`,
 					label: entryName + (isDirectory ? "/" : ""),
 					description: pathWithoutSlash,
 				});

packages/tui/src/components/editor.ts

@@ -1310,10 +1310,6 @@ https://github.com/EsotericSoftware/spine-runtimes/actions/runs/19536643416/job/
 			// Always create new SelectList to ensure update
 			this.autocompleteList = new SelectList(suggestions.items, 5, this.theme.selectList);
 		} else {
-			// No matches - check if we're still in a valid context before cancelling
-			const currentLine = this.state.lines[this.state.cursorLine] || "";
-			const textBeforeCursor = currentLine.slice(0, this.state.cursorCol);
-
 			this.cancelAutocomplete();
 		}
 	}

packages/tui/src/components/markdown.ts

@@ -235,7 +235,7 @@ export class Markdown implements Component {
 		switch (token.type) {
 			case "heading": {
 				const headingLevel = token.depth;
-				const headingPrefix = "#".repeat(headingLevel) + " ";
+				const headingPrefix = `${"#".repeat(headingLevel)} `;
 				const headingText = this.renderInlineTokens(token.tokens || []);
 				let styledHeading: string;
 				if (headingLevel === 1) {
@@ -263,17 +263,17 @@ export class Markdown implements Component {
 			}
 
 			case "code": {
-				lines.push(this.theme.codeBlockBorder("```" + (token.lang || "")));
+				lines.push(this.theme.codeBlockBorder(`\`\`\`${token.lang || ""}`));
 				if (this.theme.highlightCode) {
 					const highlightedLines = this.theme.highlightCode(token.text, token.lang);
 					for (const hlLine of highlightedLines) {
-						lines.push("  " + hlLine);
+						lines.push(`  ${hlLine}`);
 					}
 				} else {
 					// Split code by newlines and style each line
 					const codeLines = token.text.split("\n");
 					for (const codeLine of codeLines) {
-						lines.push("  " + this.theme.codeBlock(codeLine));
+						lines.push(`  ${this.theme.codeBlock(codeLine)}`);
 					}
 				}
 				lines.push(this.theme.codeBlockBorder("```"));
@@ -443,7 +443,7 @@ export class Markdown implements Component {
 						lines.push(line);
 					} else {
 						// Regular content - add parent indent + 2 spaces for continuation
-						lines.push(indent + "  " + line);
+						lines.push(`${indent}  ${line}`);
 					}
 				}
 			} else {
@@ -478,16 +478,16 @@ export class Markdown implements Component {
 				lines.push(text);
 			} else if (token.type === "code") {
 				// Code block in list item
-				lines.push(this.theme.codeBlockBorder("```" + (token.lang || "")));
+				lines.push(this.theme.codeBlockBorder(`\`\`\`${token.lang || ""}`));
 				if (this.theme.highlightCode) {
 					const highlightedLines = this.theme.highlightCode(token.text, token.lang);
 					for (const hlLine of highlightedLines) {
-						lines.push("  " + hlLine);
+						lines.push(`  ${hlLine}`);
 					}
 				} else {
 					const codeLines = token.text.split("\n");
 					for (const codeLine of codeLines) {
-						lines.push("  " + this.theme.codeBlock(codeLine));
+						lines.push(`  ${this.theme.codeBlock(codeLine)}`);
 					}
 				}
 				lines.push(this.theme.codeBlockBorder("```"));
@@ -587,7 +587,7 @@ export class Markdown implements Component {
 
 		// Render top border
 		const topBorderCells = columnWidths.map((w) => "─".repeat(w));
-		lines.push("┌─" + topBorderCells.join("─┬─") + "─┐");
+		lines.push(`┌─${topBorderCells.join("─┬─")}─┐`);
 
 		// Render header with wrapping
 		const headerCellLines: string[][] = token.header.map((cell, i) => {
@@ -602,12 +602,12 @@ export class Markdown implements Component {
 				const padded = text + " ".repeat(Math.max(0, columnWidths[colIdx] - visibleWidth(text)));
 				return this.theme.bold(padded);
 			});
-			lines.push("│ " + rowParts.join(" │ ") + " │");
+			lines.push(`│ ${rowParts.join(" │ ")} │`);
 		}
 
 		// Render separator
 		const separatorCells = columnWidths.map((w) => "─".repeat(w));
-		lines.push("├─" + separatorCells.join("─┼─") + "─┤");
+		lines.push(`├─${separatorCells.join("─┼─")}─┤`);
 
 		// Render rows with wrapping
 		for (const row of token.rows) {
@@ -622,13 +622,13 @@ export class Markdown implements Component {
 					const text = cellLines[lineIdx] || "";
 					return text + " ".repeat(Math.max(0, columnWidths[colIdx] - visibleWidth(text)));
 				});
-				lines.push("│ " + rowParts.join(" │ ") + " │");
+				lines.push(`│ ${rowParts.join(" │ ")} │`);
 			}
 		}
 
 		// Render bottom border
 		const bottomBorderCells = columnWidths.map((w) => "─".repeat(w));
-		lines.push("└─" + bottomBorderCells.join("─┴─") + "─┘");
+		lines.push(`└─${bottomBorderCells.join("─┴─")}─┘`);
 
 		lines.push(""); // Add spacing after table
 		return lines;

packages/tui/src/components/select-list.ts

@@ -90,16 +90,16 @@ export class SelectList implements Component {
 					if (remainingWidth > 10) {
 						const truncatedDesc = truncateToWidth(item.description, remainingWidth, "");
 						// Apply selectedText to entire line content
-						line = this.theme.selectedText("→ " + truncatedValue + spacing + truncatedDesc);
+						line = this.theme.selectedText(`→ ${truncatedValue}${spacing}${truncatedDesc}`);
 					} else {
 						// Not enough space for description
 						const maxWidth = width - prefixWidth - 2;
-						line = this.theme.selectedText("→ " + truncateToWidth(displayValue, maxWidth, ""));
+						line = this.theme.selectedText(`→ ${truncateToWidth(displayValue, maxWidth, "")}`);
 					}
 				} else {
 					// No description or not enough width
 					const maxWidth = width - prefixWidth - 2;
-					line = this.theme.selectedText("→ " + truncateToWidth(displayValue, maxWidth, ""));
+					line = this.theme.selectedText(`→ ${truncateToWidth(displayValue, maxWidth, "")}`);
 				}
 			} else {
 				const displayValue = item.label || item.value;

packages/tui/src/utils.ts

@@ -565,5 +565,5 @@ export function truncateToWidth(text: string, maxWidth: number, ellipsis: string
 	}
 
 	// Add reset code before ellipsis to prevent styling leaking into it
-	return result + "\x1b[0m" + ellipsis;
+	return `${result}\x1b[0m${ellipsis}`;
 }

packages/tui/test/image-test.ts

@@ -14,7 +14,7 @@ console.log("Loading image from:", testImagePath);
 let imageBuffer: Buffer;
 try {
 	imageBuffer = readFileSync(testImagePath);
-} catch (e) {
+} catch (_e) {
 	console.error(`Failed to load image: ${testImagePath}`);
 	console.error("Usage: npx tsx test/image-test.ts [path-to-image.png]");
 	process.exit(1);

packages/tui/test/truncated-text.test.ts

@@ -49,7 +49,7 @@ describe("TruncatedText component", () => {
 	});
 
 	it("preserves ANSI codes in output and pads correctly", () => {
-		const styledText = chalk.red("Hello") + " " + chalk.blue("world");
+		const styledText = `${chalk.red("Hello")} ${chalk.blue("world")}`;
 		const text = new TruncatedText(styledText, 1, 0);
 		const lines = text.render(40);
 

packages/web-ui/src/agent/agent.ts

@@ -23,6 +23,8 @@ function defaultMessageTransformer(messages: AppMessage[]): Message[] {
 		.map((m) => {
 			if (m.role === "user") {
 				// Strip attachments field (app-specific)
+
+				// biome-ignore lint/correctness/noUnusedVariables: fine here
 				const { attachments, ...rest } = m as any;
 				return rest as Message;
 			}

packages/web-ui/src/components/AttachmentTile.ts

@@ -31,12 +31,6 @@ export class AttachmentTile extends LitElement {
 		const hasPreview = !!this.attachment.preview;
 		const isImage = this.attachment.type === "image";
 		const isPdf = this.attachment.mimeType === "application/pdf";
-		const isDocx =
-			this.attachment.mimeType?.includes("wordprocessingml") ||
-			this.attachment.fileName.toLowerCase().endsWith(".docx");
-		const isPptx =
-			this.attachment.mimeType?.includes("presentationml") ||
-			this.attachment.fileName.toLowerCase().endsWith(".pptx");
 		const isExcel =
 			this.attachment.mimeType?.includes("spreadsheetml") ||
 			this.attachment.fileName.toLowerCase().endsWith(".xlsx") ||
@@ -84,7 +78,7 @@ export class AttachmentTile extends LitElement {
 								<div class="text-[10px] text-center truncate w-full">
 									${
 										this.attachment.fileName.length > 10
-											? this.attachment.fileName.substring(0, 8) + "..."
+											? `${this.attachment.fileName.substring(0, 8)}...`
 											: this.attachment.fileName
 									}
 								</div>

packages/web-ui/src/components/sandbox/ArtifactsRuntimeProvider.ts

@@ -140,7 +140,7 @@ export class ArtifactsRuntimeProvider implements SandboxRuntimeProvider {
 			return;
 		}
 
-		const { action, filename, content, mimeType } = message;
+		const { action, filename, content } = message;
 
 		try {
 			switch (action) {

packages/web-ui/src/components/sandbox/AttachmentsRuntimeProvider.ts

@@ -40,18 +40,18 @@ export class AttachmentsRuntimeProvider implements SandboxRuntimeProvider {
 
 			(window as any).readTextAttachment = (attachmentId: string) => {
 				const a = ((window as any).attachments || []).find((x: any) => x.id === attachmentId);
-				if (!a) throw new Error("Attachment not found: " + attachmentId);
+				if (!a) throw new Error(`Attachment not found: ${attachmentId}`);
 				if (a.extractedText) return a.extractedText;
 				try {
 					return atob(a.content);
 				} catch {
-					throw new Error("Failed to decode text content for: " + attachmentId);
+					throw new Error(`Failed to decode text content for: ${attachmentId}`);
 				}
 			};
 
 			(window as any).readBinaryAttachment = (attachmentId: string) => {
 				const a = ((window as any).attachments || []).find((x: any) => x.id === attachmentId);
-				if (!a) throw new Error("Attachment not found: " + attachmentId);
+				if (!a) throw new Error(`Attachment not found: ${attachmentId}`);
 				const bin = atob(a.content);
 				const bytes = new Uint8Array(bin.length);
 				for (let i = 0; i < bin.length; i++) bytes[i] = bin.charCodeAt(i);

packages/web-ui/src/components/sandbox/ConsoleRuntimeProvider.ts

@@ -92,8 +92,7 @@ export class ConsoleRuntimeProvider implements SandboxRuntimeProvider {
 			// Error handlers - track errors but don't log them
 			// (they'll be shown via execution-error message)
 			window.addEventListener("error", (e) => {
-				const text =
+				const text = `${e.error?.stack || e.message || String(e)} at line ${e.lineno || "?"}:${e.colno || "?"}`;
-					(e.error?.stack || e.message || String(e)) + " at line " + (e.lineno || "?") + ":" + (e.colno || "?");
 
 				lastError = {
 					message: e.error?.message || e.message || String(e),
@@ -102,7 +101,7 @@ export class ConsoleRuntimeProvider implements SandboxRuntimeProvider {
 			});
 
 			window.addEventListener("unhandledrejection", (e) => {
-				const text = "Unhandled promise rejection: " + (e.reason?.message || e.reason || "Unknown error");
+				const text = `Unhandled promise rejection: ${e.reason?.message || e.reason || "Unknown error"}`;
 
 				lastError = {
 					message: e.reason?.message || String(e.reason) || "Unhandled promise rejection",

packages/web-ui/src/dialogs/ProvidersModelsTab.ts

@@ -65,7 +65,7 @@ export class ProvidersModelsTab extends SettingsTab {
 			);
 
 			this.providerStatus.set(provider.id, { modelCount: models.length, status: "connected" });
-		} catch (error) {
+		} catch (_error) {
 			this.providerStatus.set(provider.id, { modelCount: 0, status: "disconnected" });
 		}
 		this.requestUpdate();

packages/web-ui/src/storage/backends/indexeddb-storage-backend.ts

@@ -87,7 +87,7 @@ export class IndexedDBStorageBackend implements StorageBackend {
 
 		if (prefix) {
 			// Use IDBKeyRange for efficient prefix filtering
-			const range = IDBKeyRange.bound(prefix, prefix + "\uffff", false, false);
+			const range = IDBKeyRange.bound(prefix, `${prefix}\uffff`, false, false);
 			const keys = await this.promisifyRequest(store.getAllKeys(range));
 			return keys.map((k) => String(k));
 		} else {

packages/web-ui/src/tools/extract-document.ts

@@ -137,7 +137,7 @@ export function createExtractDocumentTool(): AgentTool<typeof extractDocumentSch
 			const urlParts = url.split("/");
 			let fileName = urlParts[urlParts.length - 1]?.split("?")[0] || "document";
 			if (url.startsWith("https://arxiv.org/")) {
-				fileName = fileName + ".pdf";
+				fileName = `${fileName}.pdf`;
 			}
 
 			// Use loadAttachment to process the document

packages/web-ui/src/tools/javascript-repl.ts

@@ -51,7 +51,7 @@ export async function executeJavaScript(
 		// Add console output - result.console contains { type: string, text: string } from sandbox.js
 		if (result.console && result.console.length > 0) {
 			for (const entry of result.console) {
-				output += entry.text + "\n";
+				output += `${entry.text}\n`;
 			}
 		}
 
@@ -230,7 +230,7 @@ export const javascriptReplRenderer: ToolRenderer<JavaScriptReplParams, JavaScri
 				if (isTextBased && f.contentBase64) {
 					try {
 						extractedText = atob(f.contentBase64);
-					} catch (e) {
+					} catch (_e) {
 						console.warn("Failed to decode base64 content for", f.fileName);
 					}
 				}

packages/web-ui/src/utils/attachment-utils.ts

@@ -343,7 +343,7 @@ function extractTextFromElement(element: any): string {
 				}
 			}
 			if (tableTexts.length > 0) {
-				text = "\n[Table]\n" + tableTexts.join("\n") + "\n[/Table]\n";
+				text = `\n[Table]\n${tableTexts.join("\n")}\n[/Table]\n`;
 			}
 		}
 	}
@@ -397,7 +397,7 @@ async function processPptx(arrayBuffer: ArrayBuffer, fileName: string): Promise<
 						.filter((t) => t.trim());
 
 					if (slideTexts.length > 0) {
-						extractedText += "\n" + slideTexts.join("\n");
+						extractedText += `\n${slideTexts.join("\n")}`;
 					}
 					extractedText += "\n</slide>";
 				}

packages/web-ui/src/utils/format.ts

@@ -37,6 +37,6 @@ export function formatUsage(usage: Usage) {
 
 export function formatTokenCount(count: number): string {
 	if (count < 1000) return count.toString();
-	if (count < 10000) return (count / 1000).toFixed(1) + "k";
+	if (count < 10000) return `${(count / 1000).toFixed(1)}k`;
-	return Math.round(count / 1000) + "k";
+	return `${Math.round(count / 1000)}k`;
 }