Add config printing, explain mode, completions, and docs

README.md

@@ -63,6 +63,26 @@ Common flags:
 - `--quality-tags resolution,codec,source`
 - `--min-score 0-100` (match threshold)
 - `--jobs auto|N` and `--net-jobs auto|N`
+- `--dry-run-summary` (suppress per-file output in dry-run)
+- `--explain` (show top candidates when skipped)
+- `--print-config` (print effective config and exit)
+- `--completions bash|zsh|fish`
+
+## Help & version :information_source:
+```bash
+mov-renamarr --help
+mov-renamarr --version
+```
+
+## Shell completions :shell:
+Generate completions:
+```bash
+mov-renamarr --completions bash
+mov-renamarr --completions zsh
+mov-renamarr --completions fish
+```
+
+Pre-generated scripts are also available in `completions/`.
 
 ## Configuration :gear:
 Default config location: