docs: unique titles for overview pages and descriptive intro anchors

Three pages shared the title "Overview"; give building-with-ai,
self-hosting/overview, and management/overview distinct titles (sidebar
labels unchanged). Replace the generic "Learn more" links in the
introduction build-extension table with descriptive anchor text.

Author: D-K-P

docs/building-with-ai.mdx

@@ -1,5 +1,5 @@
 ---
-title: "Overview"
+title: "Building with AI: overview"
 sidebarTitle: "Overview"
 description: "Tools and resources for building Trigger.dev projects with AI coding assistants."
 ---

docs/introduction.mdx

@@ -91,19 +91,19 @@ We provide everything you need to build and manage background tasks: a CLI and S
 
 | Extension             | What it does                                                 | Docs                                                   |
 | :-------------------- | :----------------------------------------------------------- | :----------------------------------------------------- |
-| prismaExtension       | Use Prisma with Trigger.dev                                  | [Learn more](/config/extensions/prismaExtension)       |
-| pythonExtension       | Execute Python scripts in Trigger.dev                        | [Learn more](/config/extensions/pythonExtension)       |
-| playwright            | Use Playwright with Trigger.dev                              | [Learn more](/config/extensions/playwright)            |
-| puppeteer             | Use Puppeteer with Trigger.dev                               | [Learn more](/config/extensions/puppeteer)             |
-| lightpanda            | Use Lightpanda with Trigger.dev                              | [Learn more](/config/extensions/lightpanda)            |
-| ffmpeg                | Use FFmpeg with Trigger.dev                                  | [Learn more](/config/extensions/ffmpeg)                |
-| aptGet                | Install system packages with aptGet                          | [Learn more](/config/extensions/aptGet)                |
-| additionalFiles       | Copy additional files to the build directory                 | [Learn more](/config/extensions/additionalFiles)       |
-| additionalPackages    | Include additional packages in the build                     | [Learn more](/config/extensions/additionalPackages)    |
-| syncEnvVars           | Automatically sync environment variables to Trigger.dev      | [Learn more](/config/extensions/syncEnvVars)           |
-| esbuildPlugin         | Add existing or custom esbuild plugins to your build process | [Learn more](/config/extensions/esbuildPlugin)         |
-| emitDecoratorMetadata | Support for the emitDecoratorMetadata TypeScript compiler    | [Learn more](/config/extensions/emitDecoratorMetadata) |
-| audioWaveform         | Support for Audio Waveform in your project                   | [Learn more](/config/extensions/audioWaveform)         |
+| prismaExtension       | Use Prisma with Trigger.dev                                  | [prismaExtension docs](/config/extensions/prismaExtension)             |
+| pythonExtension       | Execute Python scripts in Trigger.dev                        | [pythonExtension docs](/config/extensions/pythonExtension)             |
+| playwright            | Use Playwright with Trigger.dev                              | [playwright extension docs](/config/extensions/playwright)             |
+| puppeteer             | Use Puppeteer with Trigger.dev                               | [puppeteer extension docs](/config/extensions/puppeteer)               |
+| lightpanda            | Use Lightpanda with Trigger.dev                              | [lightpanda extension docs](/config/extensions/lightpanda)             |
+| ffmpeg                | Use FFmpeg with Trigger.dev                                  | [ffmpeg extension docs](/config/extensions/ffmpeg)                     |
+| aptGet                | Install system packages with aptGet                          | [aptGet extension docs](/config/extensions/aptGet)                     |
+| additionalFiles       | Copy additional files to the build directory                 | [additionalFiles docs](/config/extensions/additionalFiles)             |
+| additionalPackages    | Include additional packages in the build                     | [additionalPackages docs](/config/extensions/additionalPackages)       |
+| syncEnvVars           | Automatically sync environment variables to Trigger.dev      | [syncEnvVars docs](/config/extensions/syncEnvVars)                     |
+| esbuildPlugin         | Add existing or custom esbuild plugins to your build process | [esbuildPlugin docs](/config/extensions/esbuildPlugin)                 |
+| emitDecoratorMetadata | Support for the emitDecoratorMetadata TypeScript compiler    | [emitDecoratorMetadata docs](/config/extensions/emitDecoratorMetadata) |
+| audioWaveform         | Support for Audio Waveform in your project                   | [audioWaveform docs](/config/extensions/audioWaveform)                 |
 
 ## Explore by example
 

docs/management/overview.mdx

@@ -1,5 +1,5 @@
 ---
-title: Overview
+title: "Management API overview"
 sidebarTitle: Overview
 description: Using the Trigger.dev management API
 ---

docs/self-hosting/overview.mdx

@@ -1,5 +1,6 @@
 ---
-title: "Overview"
+title: "Self-hosting overview"
+sidebarTitle: "Overview"
 description: "You can self-host Trigger.dev on your own infrastructure."
 ---