fix(lint): fix all pre-existing lint warnings (unused vars/imports/params)

- Prefix unused params/vars with _ in db-writer.js, system-context.js,
  record-promoter.js, a2a-transport.js
- Remove unused imports: createServer (a2a-agent-server.js),
  dirname/join/resolve (a2a-transport.js), KNOWN_PREFERENCE_KEYS (preferences.js)
- Remove unused private field _lastInputAt from pty-chat-parser.ts
- Prefix unused test variable currentProject in uok-metrics-exposition.test.mjs

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

src/resources/extensions/sf/bootstrap/system-context.js

@@ -390,7 +390,7 @@ const TACIT_SECTION_MAX_BYTES = 4096;
 // (#sf-moobj36p-ko6snt)
 const SELF_FEEDBACK_MAX_ENTRIES = 20;
 const SELF_FEEDBACK_MAX_CHARS = 4000;
-function loadSelfFeedbackBlock(cwd) {
+function loadSelfFeedbackBlock(_cwd) {
 	let entries = [];
 	if (isDbAvailable()) {
 		const rows = listSelfFeedbackEntries();

src/resources/extensions/sf/db-writer.js

@@ -38,7 +38,7 @@ export function isDecisionsTableFormat(content) {
  * Generate a minimal decisions table section (header + rows) for appending
  * to a freeform DECISIONS.md file.
  */
-function generateDecisionsAppendBlock(decisions) {
+function _generateDecisionsAppendBlock(decisions) {
 	const lines = [];
 	lines.push("");
 	lines.push("---");
@@ -250,7 +250,7 @@ export async function nextRequirementId() {
  *
  * Returns the assigned ID.
  */
-export async function saveRequirementToDb(fields, basePath) {
+export async function saveRequirementToDb(fields, _basePath) {
 	try {
 		const db = await import("./sf-db.js");
 		// Atomic ID assignment + insert inside a transaction.
@@ -287,12 +287,12 @@ export async function saveRequirementToDb(fields, basePath) {
 		});
 		// Fetch all requirements for full file regeneration
 		const adapter = db._getAdapter();
-		let allRequirements = [];
+		let _allRequirements = [];
 		if (adapter) {
 			const rows = adapter
 				.prepare("SELECT * FROM requirements ORDER BY id")
 				.all();
-			allRequirements = rows.map((row) => ({
+			_allRequirements = rows.map((row) => ({
 				id: row["id"],
 				class: row["class"],
 				status: row["status"],
@@ -329,7 +329,7 @@ export async function saveRequirementToDb(fields, basePath) {
  *
  * Returns the assigned ID.
  */
-export async function saveDecisionToDb(fields, basePath) {
+export async function saveDecisionToDb(fields, _basePath) {
 	try {
 		const db = await import("./sf-db.js");
 		// Atomic ID assignment + insert inside a transaction to prevent
@@ -363,12 +363,12 @@ export async function saveDecisionToDb(fields, basePath) {
 		});
 		// Fetch all decisions (including superseded for the full register)
 		const adapter = db._getAdapter();
-		let allDecisions = [];
+		let _allDecisions = [];
 		if (adapter) {
 			const rows = adapter
 				.prepare("SELECT * FROM decisions ORDER BY seq")
 				.all();
-			allDecisions = rows.map((row) => ({
+			_allDecisions = rows.map((row) => ({
 				seq: row["seq"],
 				id: row["id"],
 				when_context: row["when_context"],
@@ -504,12 +504,12 @@ export async function updateRequirementInDb(id, updates, basePath) {
 		db.upsertRequirement(merged);
 		// Fetch ALL requirements (including superseded) for full file regeneration
 		const adapter = db._getAdapter();
-		let allRequirements = [];
+		let _allRequirements = [];
 		if (adapter) {
 			const rows = adapter
 				.prepare("SELECT * FROM requirements ORDER BY id")
 				.all();
-			allRequirements = rows.map((row) => ({
+			_allRequirements = rows.map((row) => ({
 				id: row["id"],
 				class: row["class"],
 				status: row["status"],

src/resources/extensions/sf/preferences.js

@@ -20,11 +20,7 @@ import {
 	resolveProfileDefaults as _resolveProfileDefaults,
 } from "./preferences-models.js";
 import { upgradePreferencesFileIfDrifted } from "./preferences-template-upgrade.js";
-import {
-	formatSkillRef,
-	KNOWN_PREFERENCE_KEYS,
-	MODE_DEFAULTS,
-} from "./preferences-types.js";
+import { formatSkillRef, MODE_DEFAULTS } from "./preferences-types.js";
 import { validatePreferences } from "./preferences-validation.js";
 import { logWarning } from "./workflow-logger.js";
 

src/resources/extensions/sf/record-promoter.js

@@ -153,7 +153,7 @@ function stampRecordPromoted(filePath, milestoneId) {
 	writeFileSync(filePath, `---${newBlock}${after}`, "utf-8");
 }
 /** Append a milestone ID to .sf/QUEUE.md, creating the file if absent. */
-function appendToQueue(sfRootPath, milestoneId) {
+function _appendToQueue(sfRootPath, milestoneId) {
 	const queuePath = join(sfRootPath, "QUEUE.md");
 	if (existsSync(queuePath)) {
 		const existing = readFileSync(queuePath, "utf-8");

src/resources/extensions/sf/tests/uok-metrics-exposition.test.mjs

@@ -19,12 +19,12 @@ import {
 import { appendTraceEvent } from "../uok/trace-writer.js";
 
 const tmpDirs = [];
-let currentProject = null;
+let _currentProject = null;
 
 afterEach(() => {
 	closeDatabase();
 	invalidateMetricsCache();
-	currentProject = null;
+	_currentProject = null;
 	while (tmpDirs.length > 0) {
 		const dir = tmpDirs.pop();
 		if (dir) rmSync(dir, { recursive: true, force: true });
@@ -37,7 +37,7 @@ function makeProject() {
 	tmpDirs.push(dir);
 	// Open DB at the real project path so currentPath derives correct basePath
 	openDatabase(join(dir, ".sf", "sf.db"));
-	currentProject = dir;
+	_currentProject = dir;
 	return dir;
 }
 

src/resources/extensions/sf/uok/a2a-agent-server.js

@@ -17,7 +17,6 @@
  */
 
 import { randomUUID } from "node:crypto";
-import { createServer } from "node:http";
 import { AGENT_CARD_PATH } from "@a2a-js/sdk";
 import { DefaultRequestHandler, InMemoryTaskStore } from "@a2a-js/sdk/server";
 import {

src/resources/extensions/sf/uok/a2a-transport.js

@@ -11,7 +11,6 @@
 
 import { spawn } from "node:child_process";
 import { randomUUID } from "node:crypto";
-import { dirname, join, resolve } from "node:path";
 
 const A2A_AGENT_SERVER_PATH = new URL("./a2a-agent-server.js", import.meta.url)
 	.pathname;
@@ -284,7 +283,7 @@ export class A2ATransport {
 	 * Consumer: process exit handlers and test teardown.
 	 */
 	shutdown() {
-		for (const [name, entry] of this._registry) {
+		for (const [_name, entry] of this._registry) {
 			try {
 				entry.process.kill("SIGTERM");
 			} catch {

web/lib/pty-chat-parser.ts

@@ -300,9 +300,6 @@ export class PtyChatParser {
 	 */
 	private _completionEmitted = false;
 
-	/** Timestamp of last received input chunk, used for completion debounce */
-	private _lastInputAt = 0;
-
 	/**
 	 * True when the parser has seen a prompt boundary and is waiting for user
 	 * input.  The next non-system, non-prompt, non-TUI content line after the