Replace fixed input/output paths in platz.cfg with --indir switch

Tischedatei, XMLdatei_Bestellung, AusgabeTischePersonen and
AusgabePersonTisch are no longer configured in platz.cfg. Instead,
platz.py now requires a --indir <dir> command-line switch pointing
at a directory that must contain tische.ini and bestellung.xml, and
into which TischePersonen.txt/PersonenTische.csv are written - e.g.
work/test1 or work/test2. This makes it trivial to run against
different guest lists without editing platz.cfg. platz.bat/platz.sh
forward extra arguments so --indir can be passed through.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

README.md

@@ -51,18 +51,18 @@ required) by calling `setenv.bat`/`setenv.sh` first.
 ```bat
 :: Windows
 bin\activate_venv.bat
-bin\platz.bat
+bin\platz.bat --indir work\test1
 ```
 
 ```bash
 # Linux/macOS
 source bin/activate_venv.sh
-bin/platz.sh
+bin/platz.sh --indir work/test1
 ```
 
 `bin/platz.bat` / `bin/platz.sh` call `setenv` to set `PLATZ`, `PLATZ_CFG`, `PLATZ_LIBS`,
 `PLATZ_WORK`, `PLATZ_IN`, `PLATZ_OUT`, add `PLATZ_LIBS` to `PYTHONPATH`, and then run
-`libs/platz.py`.
+`libs/platz.py`, forwarding any extra arguments (like `--indir`) to it.
 
 Other helper scripts (`bin/setenv.*`, `bin/get_cmd.*`) follow the same environment
 convention:
@@ -74,22 +74,8 @@ convention:
 
 ### Configuring a run
 
-`cfg/platz.cfg` selects which cycle/penalty config and which working directory
-(`work/<name>/`) to use for a given run:
-
-```ini
-[Config]
-Zyklusdatei=$PLATZ_CFG/zyklus.cfg
-Zyklusart=Easy
-Strafendatei=$PLATZ_CFG/strafen.cfg
-Tischedatei=$PLATZ_WORK/test1/tische.ini
-XMLdatei_Bestellung=$PLATZ_WORK/test1/bestellung.xml
-AusgabeTischePersonen=$PLATZ_WORK/test1/TischePersonen.txt
-AusgabePersonTisch=$PLATZ_WORK/test1/PersonenTische.csv
-```
-
-To run against a different dataset, point the `Tischedatei`/`XMLdatei_Bestellung`/output
-entries at another `work/<name>/` folder, or add a new one following the same layout:
+`--indir <dir>` is required and points at a directory containing the input files and
+receiving the output files for one run — e.g. `work/test1/` or `work/test2/`:
 
 - `tische.ini` — one section per table: `Nummer`, `Hof` (venue/court), `Plaetze` (seat
   count), `Nachbarliste` (neighboring table ids), `Koordinaten`.
@@ -98,6 +84,18 @@ entries at another `work/<name>/` folder, or add a new one following the same la
   that template into). A `<Gruppe>` containing a `<Tisch>` tag is treated as a VIP group
   pinned to that table instead of being placed by the GA.
 
+To run against a different dataset, create a new folder with a `tische.ini` and
+`bestellung.xml` following the same layout and pass it via `--indir`.
+
+`cfg/platz.cfg` still selects the GA cycle/penalty config (independent of `--indir`):
+
+```ini
+[Config]
+Zyklusdatei=$PLATZ_CFG/zyklus.cfg
+Zyklusart=Easy
+Strafendatei=$PLATZ_CFG/strafen.cfg
+```
+
 `cfg/zyklus.cfg` defines the GA run schedule ("Zyklus") as an `Abfolge` (sequence of
 actions) and matching `Anzahl` (counts): `e` create, `s` select best, `S` select randomly,
 `m` mutate, `j` keep parents, `z` advance generation.
@@ -108,7 +106,7 @@ a neighboring table, and per-table seat-utilization penalties.
 
 ### Output
 
-A run writes two files into the configured working directory:
+A run writes two files into the `--indir` directory:
 
 - `TischePersonen.txt` — table → seated people, with venue/table/seat numbers.
 - `PersonenTische.csv` — person → table, sorted alphabetically by name.