diff --git a/server/index.ts b/server/index.ts
index 240c31b..b24b2c1 100644
--- a/server/index.ts
+++ b/server/index.ts
@@ -13,7 +13,6 @@ declare const __dirname: string
 // Injected by esbuild define
 declare const __APP_VERSION__: string
 declare const __DEV__: boolean
-declare const __GIT_COMMIT__: string
 const app = express()
 
 // Parse command line arguments
diff --git a/server/lib/connection-cache.ts b/server/lib/connection-cache.ts
index 00a2a28..f6e5dbd 100644
--- a/server/lib/connection-cache.ts
+++ b/server/lib/connection-cache.ts
@@ -1,3 +1,5 @@
+import type { createClient } from './db'
+
 // In-memory cache for connection runtime information
 export interface ConnectionInfo {
   version: string // PostgreSQL major version (e.g., "16")
@@ -50,7 +52,7 @@ export function clearConnectionCache(connectionId?: string): void {
  * @returns PostgreSQL major version (e.g., "16")
  * @throws Error if version cannot be extracted
  */
-export async function testAndCacheConnection(client: any, connectionId: string): Promise<string> {
+export async function testAndCacheConnection(client: ReturnType<typeof createClient>, connectionId: string): Promise<string> {
   // Test connectivity
   await client`SELECT 1`
 
diff --git a/server/lib/schema-cache.ts b/server/lib/schema-cache.ts
index e5110d0..462b969 100644
--- a/server/lib/schema-cache.ts
+++ b/server/lib/schema-cache.ts
@@ -211,7 +211,7 @@ async function buildSchemaContext(
     lines.push(`PostgreSQL ${version}`)
     lines.push('')
 
-    for (const [_key, table] of schemaMap) {
+    for (const table of schemaMap.values()) {
       // Table header
       lines.push(`${table.schema}.${table.table} (${table.objectType})`)
       if (table.comment) {
diff --git a/server/services/query-service.ts b/server/services/query-service.ts
index 9c17e26..9a5162a 100644
--- a/server/services/query-service.ts
+++ b/server/services/query-service.ts
@@ -95,7 +95,7 @@ async function getColumnMetadata(
   }
 
   // Get table info, primary key columns, column nullability, and columns with defaults
-  let tableInfo = new Map<number, { schema: string; table: string; pkColumns: Set<string>; notNullColumns: Set<string>; defaultColumns: Set<string> }>();
+  const tableInfo = new Map<number, { schema: string; table: string; pkColumns: Set<string>; notNullColumns: Set<string>; defaultColumns: Set<string> }>();
   if (tableOids.length > 0) {
     const tableRows = await client`
       SELECT
@@ -1072,8 +1072,6 @@ export const queryServiceHandlers: ServiceImpl<typeof QueryService> = {
       // Check which objects are referenced in the function definition
       // Look for patterns like: schema.name, "schema"."name", or just name (for tables in search_path)
       const deps: Array<{ schema: string; name: string; type: string; arguments: string }> = [];
-      const definitionLower = definition.toLowerCase();
-
       for (const obj of objectsResult) {
         const schema = obj.schema as string;
         const name = obj.name as string;
diff --git a/src/components/Gutter.tsx b/src/components/Gutter.tsx
index 3932130..166a757 100644
--- a/src/components/Gutter.tsx
+++ b/src/components/Gutter.tsx
@@ -1,5 +1,4 @@
-import { Home, Settings } from 'lucide-react'
-import type { ComponentType } from 'react'
+import { Home, Settings, type LucideIcon } from 'lucide-react'
 import { useNavigate, useLocation } from 'react-router-dom'
 import { Button } from './ui/button'
 import { useMemo } from 'react'
@@ -41,12 +40,12 @@ export default function Gutter({ activeItem, onItemClick }: GutterProps) {
     }
   }
 
-  const gutterIcons: { id: GutterItem; Icon: ComponentType<{ size?: number }>; label: string }[] = [
+  const gutterIcons: { id: GutterItem; Icon: LucideIcon; label: string }[] = [
     { id: 'home', Icon: Home, label: 'Organization Home' },
     { id: 'settings', Icon: Settings, label: 'Organization Settings' },
   ]
 
-  const renderButton = ({ id, Icon, label }: { id: GutterItem; Icon: ComponentType<any>; label: string }) => {
+  const renderButton = ({ id, Icon, label }: { id: GutterItem; Icon: LucideIcon; label: string }) => {
     const isActive = activeItem === id
     return (
       <Button
diff --git a/src/components/sql-editor/ObjectTree.tsx b/src/components/sql-editor/ObjectTree.tsx
index 752f354..ba069c0 100644
--- a/src/components/sql-editor/ObjectTree.tsx
+++ b/src/components/sql-editor/ObjectTree.tsx
@@ -293,7 +293,29 @@ function ObjectItem({
 }
 
 export function ObjectTree(props: ObjectTreeProps) {
-  const { tables, views, materializedViews, functions, procedures, connectionId: _connectionId, ...shared } = props
+  const {
+    tables,
+    views,
+    materializedViews,
+    functions,
+    procedures,
+    searchQuery,
+    selectedObject,
+    onObjectSelect,
+    onObjectDoubleClick,
+    onViewSchema,
+    onGenerateSQL,
+    schema,
+  } = props
+  const shared = {
+    searchQuery,
+    selectedObject,
+    onObjectSelect,
+    onObjectDoubleClick,
+    onViewSchema,
+    onGenerateSQL,
+    schema,
+  }
 
   return (
     <ScrollArea className="flex-1">
diff --git a/src/components/sql-editor/pg-autocomplete.ts b/src/components/sql-editor/pg-autocomplete.ts
index febcfb3..67a1c41 100644
--- a/src/components/sql-editor/pg-autocomplete.ts
+++ b/src/components/sql-editor/pg-autocomplete.ts
@@ -506,7 +506,7 @@ function hasQualifierDot(completion: Completion): boolean {
  * Only keywords and dot-qualifiers retrigger — tables/columns do not,
  * since the user may want to type `;`, alias, or other non-space characters.
  */
-function wrapCompletionsForRetrigger(completions: Completion[], _section: SQLSection): Completion[] {
+function wrapCompletionsForRetrigger(completions: Completion[]): Completion[] {
   return completions.map((c) => {
     // Wrap keywords that are in the retrigger set
     if (c.type === 'keyword' && RETRIGGER_KEYWORDS.has(c.label)) {
@@ -665,7 +665,7 @@ async function pgCompletionSource(ctx: CompletionContext): Promise<CompletionRes
   let completions = filteredSuggestions.map(toCompletion)
 
   // Wrap keywords/tables that should retrigger autocomplete
-  completions = wrapCompletionsForRetrigger(completions, updatedResult.context.section)
+  completions = wrapCompletionsForRetrigger(completions)
 
   // Calculate the correct 'from' position for completion replacement
   // When completing after "table.", we only want to replace the part after the dot
diff --git a/src/components/ui/command.tsx b/src/components/ui/command.tsx
index e91e02c..457d6a9 100644
--- a/src/components/ui/command.tsx
+++ b/src/components/ui/command.tsx
@@ -165,7 +165,10 @@ function CommandEmpty({
 function CommandPanel({ className, ...props }: React.ComponentProps<"div">) {
   return (
     <div
-      className="-mx-px relative min-h-0 rounded-t-xl border bg-popover bg-clip-padding shadow-xs [clip-path:inset(0_1px)] before:pointer-events-none before:absolute before:inset-0 before:rounded-t-[calc(var(--radius-xl)-1px)] **:data-[slot=scroll-area-scrollbar]:mt-2 dark:bg-clip-border dark:before:shadow-[0_-1px_--theme(--color-white/8%)]"
+      className={cn(
+        "-mx-px relative min-h-0 rounded-t-xl border bg-popover bg-clip-padding shadow-xs [clip-path:inset(0_1px)] before:pointer-events-none before:absolute before:inset-0 before:rounded-t-[calc(var(--radius-xl)-1px)] **:data-[slot=scroll-area-scrollbar]:mt-2 dark:bg-clip-border dark:before:shadow-[0_-1px_--theme(--color-white/8%)]",
+        className,
+      )}
       {...props}
     />
   );
diff --git a/src/components/ui/sheet.tsx b/src/components/ui/sheet.tsx
index 5372a0b..91eddf6 100644
--- a/src/components/ui/sheet.tsx
+++ b/src/components/ui/sheet.tsx
@@ -49,6 +49,7 @@ function SheetViewport({
         side === "left" && "flex justify-start",
         side === "right" && "flex justify-end",
         inset && "sm:p-4",
+        className,
       )}
       data-slot="sheet-viewport"
       {...props}
diff --git a/src/lib/auth-client.ts b/src/lib/auth-client.ts
index d2e9011..e59903b 100644
--- a/src/lib/auth-client.ts
+++ b/src/lib/auth-client.ts
@@ -89,6 +89,8 @@ export async function getProviders(): Promise<AuthProvider[]> {
       const data = await res.json()
       return data.providers || []
     }
-  } catch {}
+  } catch {
+    return []
+  }
   return []
 }
diff --git a/src/lib/sql/autocomplete/candidate-generator.ts b/src/lib/sql/autocomplete/candidate-generator.ts
index d03bd6d..6bc4ad6 100644
--- a/src/lib/sql/autocomplete/candidate-generator.ts
+++ b/src/lib/sql/autocomplete/candidate-generator.ts
@@ -240,7 +240,7 @@ export function generateCandidates(
       return generateSelectColumnCandidates(context, scope, schema)
 
     case 'FROM_TABLE':
-      return generateFromTableCandidates(scope, schema, context)
+      return generateFromTableCandidates(scope, schema)
 
     case 'JOIN_TABLE':
     case 'INSERT_TABLE':
@@ -453,7 +453,7 @@ function generateColumnCandidatesForTable(
  * Generate candidates for FROM clause.
  * Includes tables and clause transition keywords (WHERE, JOIN, etc.)
  */
-function generateFromTableCandidates(scope: ScopeInfo, schema: SchemaInfo, _context: CursorContext): Candidate[] {
+function generateFromTableCandidates(scope: ScopeInfo, schema: SchemaInfo): Candidate[] {
   const candidates: Candidate[] = []
 
   // 1. Tables (primary suggestions)
@@ -1055,4 +1055,3 @@ function generateDefaultCandidates(scope: ScopeInfo, schema: SchemaInfo): Candid
 
   return candidates
 }
-
diff --git a/src/lib/sql/autocomplete/scope-analyzer.ts b/src/lib/sql/autocomplete/scope-analyzer.ts
index 68d1870..38604b1 100644
--- a/src/lib/sql/autocomplete/scope-analyzer.ts
+++ b/src/lib/sql/autocomplete/scope-analyzer.ts
@@ -58,11 +58,11 @@ export function analyzeScope(
   }
 
   // Extract tables and aliases from tokens
-  const tablesFromTokens = extractTablesFromTokens(tokenized, sql)
+  const tablesFromTokens = extractTablesFromTokens(tokenized)
   scopeInfo.availableTables = tablesFromTokens
 
   // Extract CTEs if present
-  const ctesFromTokens = extractCTEsFromTokens(tokenized, sql)
+  const ctesFromTokens = extractCTEsFromTokens(tokenized)
   scopeInfo.ctes = ctesFromTokens
 
   // Add CTE names as virtual tables
@@ -80,7 +80,7 @@ export function analyzeScope(
   if (pgQueryResult.valid) {
     scopeInfo.isPgQueryValid = true
     // Merge pg_query results with token-based results
-    mergePgQueryResults(scopeInfo, pgQueryResult, schema)
+    mergePgQueryResults(scopeInfo, pgQueryResult)
   }
 
   // Resolve columns for tables in scope
@@ -92,7 +92,7 @@ export function analyzeScope(
 /**
  * Extract table references and aliases from tokens.
  */
-function extractTablesFromTokens(tokenized: TokenizedSQL, _sql: string): TableRef[] {
+function extractTablesFromTokens(tokenized: TokenizedSQL): TableRef[] {
   const tables: TableRef[] = []
   const tokens = tokenized.tokens
 
@@ -223,7 +223,7 @@ function isInFromClause(tokens: Token[], index: number): boolean {
 /**
  * Extract CTEs from WITH clause.
  */
-function extractCTEsFromTokens(tokenized: TokenizedSQL, _sql: string): CTERef[] {
+function extractCTEsFromTokens(tokenized: TokenizedSQL): CTERef[] {
   const ctes: CTERef[] = []
   const tokens = tokenized.tokens
 
@@ -387,8 +387,7 @@ function extractFromPgQueryAST(
  */
 function mergePgQueryResults(
   scopeInfo: ScopeInfo,
-  pgQueryResult: PgQueryResult,
-  _schema: SchemaInfo
+  pgQueryResult: PgQueryResult
 ): void {
   // Add any tables from pg_query not found in token analysis
   for (const pgTable of pgQueryResult.tables) {
diff --git a/src/lib/sql/autocomplete/section-detector.ts b/src/lib/sql/autocomplete/section-detector.ts
index 77ecf7c..92c1de3 100644
--- a/src/lib/sql/autocomplete/section-detector.ts
+++ b/src/lib/sql/autocomplete/section-detector.ts
@@ -870,7 +870,7 @@ function calculateSubqueryDepth(tokens: Token[]): number {
 /**
  * Check if cursor is at a position expecting a table alias.
  */
-export function isExpectingAlias(tokenized: TokenizedSQL, _cursorPosition: number): boolean {
+export function isExpectingAlias(tokenized: TokenizedSQL): boolean {
   const tokens = getTokensUpToCursor(tokenized, true)
   if (tokens.length < 2) return false
 
diff --git a/src/lib/sql/core.ts b/src/lib/sql/core.ts
index 905da7c..d29be79 100644
--- a/src/lib/sql/core.ts
+++ b/src/lib/sql/core.ts
@@ -1709,7 +1709,7 @@ function transformCreateFunction(raw: Record<string, unknown>, source: string):
         if (defexpr) {
           // Try to extract the source text for the default expression
           // For now, we'll use a simplified approach
-          defaultVal = extractExprSource(defexpr, source)
+          defaultVal = extractExprSource(defexpr)
         }
 
         const fp: FunctionParameter = {
@@ -1890,7 +1890,7 @@ function extractNumericValue(node: Record<string, unknown>): number | null {
   return null
 }
 
-function extractExprSource(expr: unknown, _fullSource: string): string | null {
+function extractExprSource(expr: unknown): string | null {
   // Try to extract source text based on location info
   if (!expr || typeof expr !== 'object') return null
   const obj = expr as Record<string, unknown>
diff --git a/src/lib/sql/format.ts b/src/lib/sql/format.ts
index 6b0c09d..6f71181 100644
--- a/src/lib/sql/format.ts
+++ b/src/lib/sql/format.ts
@@ -12,6 +12,7 @@ import type {
   ColumnDef,
   TableConstraint,
   Expr,
+  GroupingSet,
   FromClause,
   SortExpr,
   TargetExpr,
@@ -77,7 +78,7 @@ function formatStatement(stmt: Statement): string {
     case 'alter_table': return formatAlterTable(stmt)
     case 'create_function': return formatCreateFunction(stmt)
     case 'unknown': return stmt.source
-    // DDL statements - preserve original source (formatting not yet implemented)
+    // Statements without dedicated formatting support yet preserve original source.
     case 'drop':
     case 'create_view':
     case 'create_index':
@@ -92,14 +93,12 @@ function formatStatement(stmt: Statement): string {
     case 'grant':
     case 'revoke':
     case 'refresh_matview':
-    // Utility statements - preserve original source
     case 'explain':
     case 'copy':
     case 'set':
     case 'show':
     case 'transaction':
     case 'vacuum':
-    // Admin statements - preserve original source
     case 'create_role':
     case 'alter_role':
     case 'drop_role':
@@ -237,31 +236,32 @@ function formatFrom(from: FromClause): string {
   }
 }
 
-function formatGroupByItem(item: any): string {
-  // Check if it's a GroupingSet
-  if (item && typeof item === 'object' && 'kind' in item &&
-      (item.kind === 'rollup' || item.kind === 'cube' || item.kind === 'sets' || item.kind === 'empty')) {
-    const gs = item as import('./core').GroupingSet
+function isGroupingSet(item: Expr | GroupingSet): item is GroupingSet {
+  return item.kind === 'rollup' || item.kind === 'cube' || item.kind === 'sets' || item.kind === 'empty'
+}
 
-    if (gs.kind === 'empty') {
+function formatGroupByItem(item: Expr | GroupingSet): string {
+  // Check if it's a GroupingSet
+  if (isGroupingSet(item)) {
+    if (item.kind === 'empty') {
       return '()'
     }
 
-    if (gs.kind === 'rollup') {
-      if (gs.content.length === 0) return 'ROLLUP ()'
-      const content = gs.content.map(formatGroupByItem).join(', ')
+    if (item.kind === 'rollup') {
+      if (item.content.length === 0) return 'ROLLUP ()'
+      const content = item.content.map(formatGroupByItem).join(', ')
       return `ROLLUP (${content})`
     }
 
-    if (gs.kind === 'cube') {
-      if (gs.content.length === 0) return 'CUBE ()'
-      const content = gs.content.map(formatGroupByItem).join(', ')
+    if (item.kind === 'cube') {
+      if (item.content.length === 0) return 'CUBE ()'
+      const content = item.content.map(formatGroupByItem).join(', ')
       return `CUBE (${content})`
     }
 
-    if (gs.kind === 'sets') {
-      if (gs.content.length === 0) return 'GROUPING SETS ()'
-      const content = gs.content.map(item => {
+    if (item.kind === 'sets') {
+      if (item.content.length === 0) return 'GROUPING SETS ()'
+      const content = item.content.map(item => {
         // Each item in GROUPING SETS needs to be wrapped in parentheses
         // unless it's already a GroupingSet (empty, rollup, cube, or nested sets)
         const formatted = formatGroupByItem(item)
@@ -276,7 +276,7 @@ function formatGroupByItem(item: any): string {
   }
 
   // Otherwise it's a regular expression
-  return formatExpr(item)
+  return formatExpr(item as Expr)
 }
 
 function formatTableRef(t: TableRef): string {
diff --git a/website/src/components/sections/faqs-accordion.tsx b/website/src/components/sections/faqs-accordion.tsx
index 43390c0..2b39643 100644
--- a/website/src/components/sections/faqs-accordion.tsx
+++ b/website/src/components/sections/faqs-accordion.tsx
@@ -12,7 +12,7 @@ export function Faq({
   answer,
   ...props
 }: { question: ReactNode; answer: ReactNode } & ComponentProps<'div'>) {
-  let autoId = useId()
+  const autoId = useId()
   id = id || autoId
 
   return (
diff --git a/website/src/components/sections/faqs-two-column-accordion.tsx b/website/src/components/sections/faqs-two-column-accordion.tsx
index 2b28286..5c7b702 100644
--- a/website/src/components/sections/faqs-two-column-accordion.tsx
+++ b/website/src/components/sections/faqs-two-column-accordion.tsx
@@ -13,7 +13,7 @@ export function Faq({
   answer,
   ...props
 }: { question: ReactNode; answer: ReactNode } & ComponentProps<'div'>) {
-  let autoId = useId()
+  const autoId = useId()
   id = id || autoId
 
   return (
diff --git a/website/src/components/sections/stats-with-graph.tsx b/website/src/components/sections/stats-with-graph.tsx
index b9fe25b..84fca9b 100644
--- a/website/src/components/sections/stats-with-graph.tsx
+++ b/website/src/components/sections/stats-with-graph.tsx
@@ -17,7 +17,7 @@ export function Stat({
 }
 
 export function StatsWithGraph({ children, ...props }: ComponentProps<typeof Section>) {
-  let pathId = useId()
+  const pathId = useId()
 
   return (
     <Section {...props}>