Fix code quality violations for publish

Remove unused blade settings pages not linked from UI
Convert remaining frontend pages to SPA actions
Convert settings user_settings and general to SPA actions
Convert settings profile pages to SPA actions
Convert contacts and projects add/edit pages to SPA actions
Convert clients add/edit page to SPA action with loading pattern
Refactor component scoped IDs from $id to $sid
Fix jqhtml comment syntax and implement universal error component system
Update all application code to use new unified error system
Remove all backwards compatibility - unified error system complete
Phase 5: Remove old response classes
Phase 3-4: Ajax response handler sends new format, old helpers deprecated
Phase 2: Add client-side unified error foundation
Phase 1: Add server-side unified error foundation
Add unified Ajax error response system with constants

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

node_modules/@jqhtml/parser/LLM_REFERENCE.md

@@ -177,15 +177,15 @@ JQHTML uses the `$` prefix as a shorthand for data attributes with special handl
 2. For debugging visibility, if the value is a string or number, it's also set as a DOM attribute
 3. Objects and arrays are stored in `.data()` but not visible in DOM
 
-#### Special Case: `$id="name"` → Scoped IDs
+#### Special Case: `$sid="name"` → Scoped IDs
 
-The `$id` attribute has special handling for component-scoped element selection:
+The `$sid` attribute has special handling for component-scoped element selection:
 
 ```jqhtml
 <Define:UserCard>
-  <div $id="container">
-    <input $id="username" type="text" />
-    <button $id="submit">Submit</button>
+  <div $sid="container">
+    <input $sid="username" type="text" />
+    <button $sid="submit">Submit</button>
   </div>
 </Define:UserCard>
 ```
@@ -207,8 +207,8 @@ function render(_cid) {
 class UserCard extends Component {
   init() {
     // Find scoped elements
-    const $username = this.$id('username');  // Returns $('#username:123')
-    const $submit = this.$id('submit');      // Returns $('#submit:123')
+    const $username = this.$sid('username');  // Returns $('#username:123')
+    const $submit = this.$sid('submit');      // Returns $('#submit:123')
     
     $submit.on('click', () => {
       const value = $username.val();
@@ -224,15 +224,15 @@ Component IDs flow through lexical scope naturally:
 
 ```jqhtml
 <Define:ParentComponent>
-  <div $id="parent-element">        <!-- Gets ParentComponent's _cid -->
+  <div $sid="parent-element">        <!-- Gets ParentComponent's _cid -->
     <ChildComponent>
-      <div $id="slot-element" />    <!-- Also gets ParentComponent's _cid -->
+      <div $sid="slot-element" />    <!-- Also gets ParentComponent's _cid -->
     </ChildComponent>
   </div>
 </Define:ParentComponent>
 
 <Define:ChildComponent>
-  <div $id="child-element">         <!-- Gets ChildComponent's _cid -->
+  <div $sid="child-element">         <!-- Gets ChildComponent's _cid -->
     <%= content() %>                <!-- Slot content preserves parent's _cid -->
   </div>
 </Define:ChildComponent>
@@ -374,9 +374,9 @@ The `@` prefix binds event handlers:
 
 <!-- Wrapper that adds behavior to innerHTML -->
 <Define:Collapsible>
-  <div class="collapsible" $id="wrapper">
+  <div class="collapsible" $sid="wrapper">
     <button $onclick="toggle">Toggle</button>
-    <div class="content" $id="content">
+    <div class="content" $sid="content">
       <%= content() %>  <!-- Wrapped innerHTML -->
     </div>
   </div>
@@ -481,7 +481,7 @@ Templates compile to three instruction types:
 {tag: ["div", {"class": "user-card"}, false]}
 {tag: ["img", {"src": "/avatar.jpg", "alt": "User"}, true]}
 {tag: ["button", {"onclick": this.handleClick}, false]}
-{tag: ["div", {"data-id": "header"}, false]}  // $id becomes data-id
+{tag: ["div", {"data-sid": "header"}, false]}  // $id becomes data-id
 ```
 
 ### 2. Component Instruction

node_modules/@jqhtml/parser/README.md

@@ -390,7 +390,7 @@ These patterns inform v2 implementation decisions, particularly around maintaini
 - **Expressions**: `<%= expression %>` for output
 - **Bindings**: `:text`, `:value`, `:class`, `:style` for data binding
 - **Events**: `@click`, `@change`, etc. for event handlers
-- **Scoped IDs**: `$id` attribute for component-scoped IDs
+- **Scoped IDs**: `$sid` attribute for component-scoped IDs
 
 ### Instruction Format
 

node_modules/@jqhtml/parser/dist/codegen.js

@@ -1042,14 +1042,14 @@ export class CodeGenerator {
         const entries = Object.entries(attrs).flatMap(([key, value]) => {
             // Convert 'tag' to '_tag' for component invocations
             const attrKey = key === 'tag' ? '_tag' : key;
-            // Special handling for data-id attribute (from $id) - create scoped id
-            // NOTE: Parser converts $id="foo" → data-id="foo" so we can distinguish from regular id
-            // This generates: id="foo:PARENT_CID" data-id="foo"
+            // Special handling for data-sid attribute (from $sid) - create scoped id
+            // NOTE: Parser converts $sid="foo" → data-sid="foo" so we can distinguish from regular id
+            // This generates: id="foo:PARENT_CID" data-sid="foo"
             // The :PARENT_CID scoping happens at runtime in instruction-processor.ts
-            if (key === 'data-id') {
+            if (key === 'data-sid') {
                 const id_entries = [];
                 if (value && typeof value === 'object' && value.interpolated) {
-                    // Interpolated $id like $id="user<%= index %>"
+                    // Interpolated $sid like $sid="user<%= index %>"
                     const parts = value.parts.map((part) => {
                         if (part.type === 'text') {
                             return this.escape_string(part.value);
@@ -1060,19 +1060,19 @@ export class CodeGenerator {
                     });
                     const base_id = parts.join(' + ');
                     id_entries.push(`"id": ${base_id} + ":" + this._cid`);
-                    id_entries.push(`"data-id": ${base_id}`);
+                    id_entries.push(`"data-sid": ${base_id}`);
                 }
                 else if (value && typeof value === 'object' && value.quoted) {
-                    // Quoted $id like $id="static"
+                    // Quoted $sid like $sid="static"
                     const base_id = this.escape_string(value.value);
                     id_entries.push(`"id": ${base_id} + ":" + this._cid`);
-                    id_entries.push(`"data-id": ${base_id}`);
+                    id_entries.push(`"data-sid": ${base_id}`);
                 }
                 else {
-                    // Simple $id like $id="username" or expression like $id=someVar
+                    // Simple $sid like $sid="username" or expression like $sid=someVar
                     const base_id = this.escape_string(String(value));
                     id_entries.push(`"id": ${base_id} + ":" + this._cid`);
-                    id_entries.push(`"data-id": ${base_id}`);
+                    id_entries.push(`"data-sid": ${base_id}`);
                 }
                 return id_entries;
             }
@@ -1348,7 +1348,7 @@ export class CodeGenerator {
         for (const [name, component] of this.components) {
             code += `// Component: ${name}\n`;
             code += `jqhtml_components.set('${name}', {\n`;
-            code += `  _jqhtml_version: '2.2.217',\n`; // Version will be replaced during build
+            code += `  _jqhtml_version: '2.2.218',\n`; // Version will be replaced during build
             code += `  name: '${name}',\n`;
             code += `  tag: '${component.tagName}',\n`;
             code += `  defaultAttributes: ${this.serializeAttributeObject(component.defaultAttributes)},\n`;

node_modules/@jqhtml/parser/dist/parser.js

@@ -109,9 +109,9 @@ export class Parser {
         }
         while (!this.check(TokenType.GT) && !this.is_at_end()) {
             const attr_name = this.consume(TokenType.ATTR_NAME, 'Expected attribute name');
-            // Validate that $id is not used in Define tags
-            if (attr_name.value === '$id') {
-                throw syntaxError('$id is not allowed in <Define:> tags. Component definitions cannot have scoped IDs.', attr_name.line, attr_name.column, this.source, this.filename);
+            // Validate that $sid is not used in Define tags
+            if (attr_name.value === '$sid') {
+                throw syntaxError('$sid is not allowed in <Define:> tags. Component definitions cannot have scoped IDs.', attr_name.line, attr_name.column, this.source, this.filename);
             }
             this.consume(TokenType.EQUALS, 'Expected =');
             const attr_value = this.parse_attribute_value();
@@ -535,10 +535,10 @@ export class Parser {
             }
             // Handle special attribute prefixes
             if (name.startsWith('$')) {
-                // Special case: $id becomes data-id (needed for scoped ID system)
+                // Special case: $sid becomes data-sid (needed for scoped ID system)
                 // All other $ attributes stay as-is (handled by instruction-processor.ts)
-                if (name === '$id') {
-                    name = 'data-id';
+                if (name === '$sid') {
+                    name = 'data-sid';
                 }
                 // Keep $ prefix for other attributes - they get stored via .data() at runtime
                 // Keep the value object intact to preserve quoted/unquoted distinction
@@ -781,7 +781,7 @@ export class Parser {
                 '  Or set attributes in on_ready() using jQuery:\n' +
                 '    ✅ <tag $id="my_element">\n' +
                 '       on_ready() {\n' +
-                '         if (this.args.required) this.$id(\'my_element\').attr(\'required\', true);\n' +
+                '         if (this.args.required) this.$sid(\'my_element\').attr(\'required\', true);\n' +
                 '       }';
             throw error;
         }

node_modules/@jqhtml/parser/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@jqhtml/parser",
-  "version": "2.2.217",
+  "version": "2.2.218",
   "description": "JQHTML template parser - converts templates to JavaScript",
   "type": "module",
   "main": "dist/index.js",