docs(uvx): add uvx installation command

Author: kshitijrajsharma

README.md

@@ -27,11 +27,15 @@ A Project of [OSGeo Nepal](https://osgeonepal.org).
 Pick the one that fits how you work.
 
 ```bash
+uvx --from osmsg osmsg --last hour       # zero-install, one-shot run
 pip install osmsg                        # into your project
 uv tool install osmsg                    # standalone CLI
 docker run --rm -v "$PWD:/work" -w /work ghcr.io/osgeonepal/osmsg:latest --last hour
 ```
 
+`uvx` can run osmsg in a throwaway environment , no install, no virtualenv to manage. Works
+with any flag combination, e.g. `uvx --from osmsg osmsg --last hour --tags building --summary -f parquet -f markdown`.
+
 ## Quick start
 
 ```bash

docs/Installation.md

@@ -3,13 +3,23 @@
 ## End user
 
 ```bash
+uvx --from osmsg osmsg --last hour    # zero-install, one-shot run
+# or
 pip install osmsg
 # or
 uv tool install osmsg
 ```
 
 Wheels include the compiled `pyosmium` extension; no system OSM tools are required.
 
+`uvx` (from [uv](https://docs.astral.sh/uv/)) runs osmsg in a managed, throwaway environment. handy for
+ad-hoc runs, CI jobs, and cron entries where you don't want to manage a venv. If a stale resolver cache
+ever picks an older release, add `--refresh`:
+
+```bash
+uvx --refresh --from osmsg osmsg --last hour
+```
+
 ## Docker
 
 Pull a published image from GHCR:

osmsg/export/markdown.py

@@ -80,8 +80,33 @@ def _sum(*cols: str) -> int:
     parts.append(f"\nFull stats: `{fname}.parquet`")
 
     parts.append("\n#### Top 5 users")
+    user_cols = (
+        ("rank", "rank"),
+        ("name", "name"),
+        ("changesets", "changesets"),
+        ("map_changes", "map changes"),
+        ("nodes_create", "nodes created"),
+        ("ways_create", "ways created"),
+        ("rels_create", "rels created"),
+        ("poi_create", "poi created"),
+        ("hashtags", "hashtags"),
+    )
+    parts.append("| " + " | ".join(label for _, label in user_cols) + " |")
+    parts.append("| " + " | ".join("---" for _ in user_cols) + " |")
     for r in rows[:5]:
-        parts.append(f"- {r['name']}: {_human(int(r.get('map_changes', 0) or 0))} map changes")
+        cells: list[str] = []
+        for key, _ in user_cols:
+            v = r.get(key)
+            if key == "hashtags":
+                hts = v or []
+                cells.append(", ".join(hts[:3]) + (f" (+{len(hts) - 3})" if len(hts) > 3 else ""))
+            elif key == "name":
+                cells.append(str(v or ""))
+            elif key == "rank":
+                cells.append(str(v if v is not None else ""))
+            else:
+                cells.append(_human(int(v or 0)))
+        parts.append("| " + " | ".join(cells) + " |")
 
     if tm_stats and any("tasks_mapped" in r for r in rows):
         parts.append("\n#### Top 5 TM mappers")