docs: update the readme files

pbf-craft-cli/README.md

@@ -1,14 +1,41 @@
 # pbf-craft-cli
 
-A command-line utility for OpenStreetMap PBF file format.
+`pbf-craft-cli` is a Rust-powered utility for inspecting, exporting, and comparing OpenStreetMap `.osm.pbf` data. It pairs with the `pbf-craft` library and ships the same decoding performance in a convenient command line.
 
-## Usage
+## Installation
+
+You need the Rust toolchain (`cargo`, Rust 1.70+ recommended). From the repository root:
 
 ```bash
-pbf-craft-cli get
-pbf-craft-cli search
-pbf-craft-cli export
-pbf-craft-cli boundary
-pbf-craft-cli diff
-pbf-craft-cli help
+cargo install pbf-craft-cli
 ```
+
+Most commands operate on local `.osm.pbf` extracts. The `export` subcommand additionally requires access to a Postgres database populated with OSM tables (`current_nodes`, `current_ways`, etc.).
+
+## Command Overview
+
+- `get` – Fetch a specific node, way, or relation plus its referenced dependencies using the indexed reader cache.
+  ```bash
+  pbf-craft get --eltype way --elid 1055523837 --file resources/andorra-latest.osm.pbf
+  ```
+- `search` – Locate elements by id, tag filters, or node pair membership. Use `--exact=false` to widen the search to related entities.
+  ```bash
+  pbf-craft search --tagkey highway --tagvalue residential --file data/map.osm.pbf
+  pbf-craft search --eltype node --elid 123 --file data/map.osm.pbf --exact=false
+  ```
+- `export` – Stream OSM objects from Postgres into a new PBF file.
+  ```bash
+  pbf-craft export \
+    --host localhost --port 5432 --user osm --password secret \
+    --dbname osm --output exports/latest.osm.pbf
+  ```
+- `boundary` – Compute the convex hull boundary of all points in a PBF extract and emit GeoJSON.
+  ```bash
+  pbf-craft boundary --file data/map.osm.pbf > boundary.geojson
+  ```
+- `diff` – Compare two PBF files and write a CSV of added, modified, and deleted elements (defaults to `./diff.csv`).
+  ```bash
+  pbf-craft diff --source old.osm.pbf --target new.osm.pbf --output reports/diff.csv
+  ```
+
+Run `pbf-craft <command> --help` for the complete flag reference of each subcommand, including cache controls (`--cache-size`) and search helpers (`--pair nodeA nodeB`). All commands exit non-zero on fatal errors, making them script-friendly.

pbf-craft/README.md

@@ -15,7 +15,7 @@ Add this to your `Cargo.toml`:
 
 ```toml
 [dependencies]
-pbf-craft = "0.9"
+pbf-craft = "0.10"
 ```
 
 Reading a PBF file: