Normalize docs command examples to npx

Author: mokuwaki

content/docs/getting-started/installation.mdx

@@ -57,10 +57,11 @@ globally:
 npm install -g rollberry
 ```
 
-Then run it directly:
+This makes the `rollberry` binary available globally, but this docs site keeps
+all command examples on the same `npx` form for consistency:
 
 ```bash
-rollberry capture https://example.com --out ./artifacts/example.mp4
+npx rollberry capture https://example.com --out ./artifacts/example.mp4
 ```
 
 ## Chromium behavior

content/docs/getting-started/introduction.mdx

@@ -11,8 +11,8 @@ launch-ready videos with a real Chromium browser and FFmpeg.
 
 It supports two primary workflows:
 
-- `rollberry capture` for one-off URLs or multi-page stitched captures
-- `rollberry render` for project JSON files with scenes, actions, timelines,
+- `npx rollberry capture` for one-off URLs or multi-page stitched captures
+- `npx rollberry render` for project JSON files with scenes, actions, timelines,
   and multiple outputs
 
 Both workflows write machine-readable sidecars so you can automate around the

content/docs/guides/project-rendering.mdx

@@ -1,6 +1,6 @@
 ---
 title: Project Rendering
-description: Use rollberry render with a project JSON file for repeatable scenes, actions, timelines, and multiple outputs.
+description: Use npx rollberry render with a project JSON file for repeatable scenes, actions, timelines, and multiple outputs.
 order: 0
 ---
 

content/docs/reference/cli-options.mdx

@@ -7,8 +7,8 @@ order: 0
 ## Commands
 
 ```bash
-rollberry capture <url...> [options]
-rollberry render <project.json> [options]
+npx rollberry capture <url...> [options]
+npx rollberry render <project.json> [options]
 ```
 
 ## Capture options

content/docs/troubleshooting/common-issues.mdx

@@ -121,7 +121,7 @@ The current implementation caps total frames at `36000`.
 
 ## Render project validation failed
 
-**Symptom:** `rollberry render` exits before capture begins with a project-file
+**Symptom:** `npx rollberry render` exits before capture begins with a project-file
 validation error.
 
 **Fix:** Check: