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>

CLAUDE.md

@@ -39,24 +39,31 @@ Entry point is `libs/platz.py`, invoked via the scripts in `bin/` (each provided
   "$PLATZ_LIBS/platz.py"`. This is the actual program entry point (replaces the old
   `bin/run` / `bin/run.bat`, which hardcoded absolute paths and have been removed).
 
-Configuration is driven by `cfg/platz.cfg`, which points (via `$PLATZ_CFG`/`$PLATZ_WORK`
-env-var expansion) to:
+`libs/platz.py` requires a command-line switch `--indir <dir>` (parsed with `optparse`,
+since this is Python 2) pointing at a directory that holds the per-run input files and
+receives the output files — e.g. `work/test1/`, `work/test2/`, or any new folder following
+the same layout:
+- `tische.ini` — table definitions: id, `Nummer`, `Hof` (venue/court), `Plaetze` (seats),
+  `Nachbarliste` (neighbor table ids), `Koordinaten`.
+- `bestellung.xml` — the guest order: `<Gruppe>` blocks containing `<Person>` (with
+  `Vorname`/`Nachname`/optional `Titel`) and an `<Anzahl>` (reservation count per person
+  template — this expands into that many identical bookings), plus optional `<Tisch>` to
+  pin a VIP group to a specific table.
+- Output (written back into the same `--indir` directory): `TischePersonen.txt` (table →
+  seated people) and `PersonenTische.csv` (person → table, sorted).
+
+`cfg/platz.cfg` (still located via `$PLATZ_CFG`, independent of `--indir`) only selects the
+GA cycle/penalty config:
 - `cfg/zyklus.cfg` — defines the GA run schedule ("Zyklus"): a sequence of actions
   (`e`=erzeugen/create, `s`=selektieren/select-best, `S`=random-select, `m`=mutieren/mutate,
   `j`=behalten/keep parents, `z`=neue Generation/advance generation) each with a count.
 - `cfg/strafen.cfg` — the penalty ("Strafpunkte") table: cost of splitting a group across
   tables (by group size and number of splits), cost of a lone person, and per-table
   under-utilization penalties.
-- A per-run working directory under `work/<name>/` (e.g. `work/test1/`, `work/test2/`)
-  containing:
-  - `tische.ini` — table definitions: id, `Nummer`, `Hof` (venue/court), `Plaetze` (seats),
-    `Nachbarliste` (neighbor table ids), `Koordinaten`.
-  - `bestellung.xml` — the guest order: `<Gruppe>` blocks containing `<Person>` (with
-    `Vorname`/`Nachname`/optional `Titel`) and an `<Anzahl>` (reservation count per person
-    template — this expands into that many identical bookings), plus optional `<Tisch>` to
-    pin a VIP group to a specific table.
-  - Output: `TischePersonen.txt` (table → seated people) and `PersonenTische.csv`
-    (person → table, sorted).
+
+`tische.ini`/`bestellung.xml`/`TischePersonen.txt`/`PersonenTische.csv` are fixed filenames
+resolved as `os.path.join(indir, ...)` in `platz.py` — they are no longer configured in
+`platz.cfg`.
 
 ## Architecture
 
@@ -99,13 +106,16 @@ Domain-agnostic and reusable in principle:
   that table rather than going through normal GA placement.
 
 ### Data flow through `platz.py` (`__main__`)
-1. Read `platz.cfg` to locate the other config/data files (env-var expansion via
+1. Parse `--indir` (required) from the command line via `optparse`.
+2. Read `platz.cfg` to locate `zyklus.cfg`/`strafen.cfg` (env-var expansion via
    `os.path.expandvars`).
-2. Load `Zyklus` (GA schedule), `Strafliste` (penalties), `Tische` (table layout).
-3. Load `bestellung.xml` via `XMLConfig` → people, groups, VIP group, VIP seat map.
-4. Build a `Farm(Zyklus, Sitzplatzverteilung, Tische=..., Gruppen=..., Strafen=...,
+3. Load `Zyklus` (GA schedule), `Strafliste` (penalties), `Tische` (table layout, from
+   `<indir>/tische.ini`).
+4. Load `<indir>/bestellung.xml` via `XMLConfig` → people, groups, VIP group, VIP seat map.
+5. Build a `Farm(Zyklus, Sitzplatzverteilung, Tische=..., Gruppen=..., Strafen=...,
    VIPListe=..., VIPs=...)`, which runs the whole GA cycle in its constructor.
-5. Take `Farm.Bester()` and call `.speichern(...)` to write the output files.
+6. Take `Farm.Bester()` and call `.speichern(...)` to write `<indir>/TischePersonen.txt` and
+   `<indir>/PersonenTische.csv`.
 
 Both `libs/platz.py` and `libs/Strukturdaten.py` also have self-test code under
 `if __name__ == '__main__':` that exercises the classes directly with hardcoded sample data —