Revert widget/dashboard architecture and clean up artifacts - #14

- Added /static/css/charts/charts.css to base.templ
- This provides chart-aspect-container and fullscreen styles
- Framework already handles box_id → serverID mapping automatically

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

The previous approach used {} template expressions inside <script> tags which
don't work in templ. Changed to use 'script' template blocks which properly
handle JavaScript code generation with parameter interpolation.

This fixes the 'SyntaxError: missing : after property id' errors.

Only converted SessionsRequestsChartPartial for now - will update remaining
charts once this is verified working.

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

…iables

The 'script' template type wraps code in functions which breaks ES6 imports.
Changed to use templ.Raw() with fmt.Sprintf() to interpolate variables directly
into the JavaScript code while keeping it as a proper ES6 module.

This should fix the import and syntax errors.

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

Replace broken template expressions in chart scripts with a working
pattern that uses data attributes to pass parameters and dynamic
import() promises to load ES6 modules. This fixes JavaScript syntax
errors that prevented charts from rendering.

Changes:
- Pass boxID, hours, limit via data-* attributes on script tags
- Read parameters using document.currentScript.dataset
- Use dynamic import().then() instead of static imports
- Apply pattern to all 7 chart partials consistently

Fixes chart rendering issues where template expressions like
{ fmt.Sprintf() } were rendering literally instead of being
evaluated, causing "SyntaxError: missing : after property id"
errors in the browser console.

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

…JavaScript

Rewrote all 7 chart partials to use async IIFE pattern with template
expressions only in variable declarations at the top. This ensures
variables are properly evaluated before being used in async import
statements.

Key changes:
- Wrap entire script in (async function() { ... })()
- Declare boxID, hours, limit at top with template expressions
- Use await import() for cleaner async module loading
- Avoid document.currentScript which returns null in modules

This fixes "can't access property 'dataset', script is null" errors
that prevented charts from rendering.

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

Complete rewrite of the chart rendering approach:

1. Converted chart-defaults.js from ES6 module to global IIFE
   namespaced under window.GearboxCharts
2. Merged fullscreen functionality into chart-defaults.js
3. Added chart-defaults.js as a global script in base.templ
4. Rewrote all 7 chart partials to use templ's `script` keyword
   instead of HTML `<script>` tags

The templ `script` keyword properly serializes Go variables to
JavaScript (unlike `<script>` tags where template expressions
render as literal text). This follows the same proven pattern used
by the existing chart_widgets.templ (lineChartScript, etc).

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

Wrap the dashboard grid in a bg-white/slate-800 rounded card with
shadow and padding to match the visual style of the existing history
page. Also updated metrics-history.yaml (gitignored) to use width 3
for row 2 charts so they match row 1 sizing instead of stretching
full width.

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

feat: add comprehensive design document for Gearbox

- Deleted the metrics chart widgets implementation from chart_widgets.go.
- Removed the registration of historical chart widgets in the plugin initialization.
- Updated the dashboard editor to handle widget addition and rendering without relying on the removed metrics widgets.
- Enhanced the widget palette with drag-and-drop functionality for adding widgets to the dashboard.
- Introduced a new sortable-loader.js to load Sortable.js with the Swap plugin for improved drag-and-drop support.

- Reverted the implementation of the widget-based dashboard architecture due to over-engineering concerns, retaining reusable components as standalone pieces.
- Updated TASKS_ARCHIVE.md to reflect the reverted status and key achievements.
- Modified getting-started.md to clarify plugin page addition in navigation.
- Removed outdated dashboards and widgets documentation from plugins.md.
- Deleted the plugin work summary report as it is no longer relevant.

- Deleted the widget palette management script which handled loading, filtering, and displaying widgets from enabled plugins.
- Removed the sortable loader script that imported and initialized Sortable.js with the Swap plugin.