docs: fix install instructions to use git clone + uv sync

bincio is not published to PyPI. All CLI invocations use `uv run bincio`.

CHEATSHEET.md

@@ -4,10 +4,10 @@
 
 ```bash
 # 1. Drop new .fit / .gpx / .tcx files into your input dir, then:
-bincio extract
+uv run bincio extract
 
 # 2. Rebuild the site (merges any sidecar edits, then builds)
-bincio render
+uv run bincio render
 
 # 3. Done — copy site/dist/ to your host
 ```
@@ -17,24 +17,24 @@ bincio render
 ## Extract
 
 ```bash
-bincio extract                            # full run using extract_config.yaml
-bincio extract --since 2025-01-01        # only files newer than date
-bincio extract --file ride.gpx           # single file → JSON on stdout
-bincio extract --input ~/rides \
-               --output ~/bincio_data    # override config paths
+uv run bincio extract                            # full run using extract_config.yaml
+uv run bincio extract --since 2025-01-01        # only files newer than date
+uv run bincio extract --file ride.gpx           # single file → JSON on stdout
+uv run bincio extract --input ~/rides \
+                      --output ~/bincio_data    # override config paths
 ```
 
 Re-extraction is safe — unchanged files are skipped (hash-based dedup).
-To force a full re-extract: `rm -rf ~/bincio_data && bincio extract`
+To force a full re-extract: `rm -rf ~/bincio_data && uv run bincio extract`
 
 ---
 
 ## Render
 
 ```bash
-bincio render                            # merge edits + production build → site/dist/
-bincio render --serve                    # merge edits + dev server → http://localhost:4321
-bincio render --data-dir ~/bincio_data   # explicit data dir
+uv run bincio render                            # merge edits + production build → site/dist/
+uv run bincio render --serve                    # merge edits + dev server → http://localhost:4321
+uv run bincio render --data-dir ~/bincio_data   # explicit data dir
 ```
 
 `bincio render` always runs `merge_all()` first (applies sidecar edits, produces `_merged/`),
@@ -52,7 +52,7 @@ npm run preview
 
 ```bash
 # Start the edit server (port 4041 by default)
-bincio edit --data-dir ~/bincio_data
+uv run bincio edit --data-dir ~/bincio_data
 
 # Set PUBLIC_EDIT_URL=http://localhost:4041 in site/.env to enable the Edit button
 # Then browse to any activity and click Edit — a drawer opens in the same page