refactor: Cleanup git state - commit all staged changes

Major refactoring cleanup:
- Add new controller architecture (class-controller-*.php)
- Add new settings-v2 UI (views/settings-v2/)
- Add new CSS architecture (agentic-sidebar.css, tokens)
- Add esbuild build pipeline (scripts/build.js, package.json)
- Add composer dependencies (vendor/)
- Add frontend src directory (assets/js/src/index.jsx)
- Add documentation files
- Remove old/obsolete files (class-settings.php, old CSS)

This commits all pending changes from previous refactoring efforts.

vendor/parsica-php/parsica/docs/resources/03_naming_conventions.md

@@ -0,0 +1,38 @@
+---
+title: Naming Conventions
+sidebar_label: Naming Conventions 
+---
+
+
+## String and Character
+
+PHP doesn't have a separate type for strings and characters, as opposed to some languages where string is defined as a list of characters. Still, as a convention in Parsica and its documentation, we generally use `'a'`, `'1'` (single quoted) to indicate a single character, and `"a"`, `"abc123"` (double quoted) to indicate a string.
+
+We also use single quotes to indicate constant strings or symbols, such as `'STATUS_SUCCESS'`;
+
+
+## Predicates
+
+Predicates are either prefixed with `is` or suffixed with `pred`.
+
+```php
+<?php
+$predicate = orPred(isEqual('5'), isEqual('6'));
+assertTrue($predicate('6'));
+```
+
+## Character Parsers
+
+A parser for a single character is always suffixed with `Char`, as in `digitChar()`. These always output a string.
+
+## Case
+
+Some parsers have case-insensitive versions. These are sufficed with 'I'.
+
+```php
+<?php
+$parser = stringI('hello world'); 
+$result = $parser->tryString("hElLO WoRlD"); 
+assertEquals("hElLO WoRlD", $result->output());
+```
+