setup: one-shot install.sh; docs: install, fixed-gain normalization, latency

README.md

@@ -25,25 +25,18 @@ pure-native build, and keep a path to a fully portable engine.
 
 ## Build
 
-Dependencies (once, as root):
+Everything in one command (idempotent; sudo only for system packages):
 
-    sudo setup/install-deps.sh
+    setup/install.sh
 
-Runtime + MSTTS voices (once):
+Manual steps, if needed:
 
-    setup/setup-prefix.sh
-
-Flextalk voices (once; needs the extracted installer, see `docs/NOTES.md`):
-
-    setup/setup-flextalk.sh
-
-Host:
-
-    # Winelib (native ELF + launcher): build/sapi4host-winlib.exe + .exe.so
+    sudo setup/install-deps.sh     # Wine/Winelib/helpers
+    setup/setup-prefix.sh          # prefix + SAPI4 runtime + MSTTS voices
+    setup/setup-flextalk.sh        # Flextalk extraction + registry
+    # host build:
     winegcc -m32 -O2 -o build/sapi4host-winlib host/sapi4host.c -I../reference \
         -lole32 -luser32 -ladvapi32
-
-    # PE fallback (runs under wine):
     i686-w64-mingw32-gcc -O2 -static -o build/sapi4host.exe host/sapi4host.c \
         -I../reference -lole32 -luser32 -ladvapi32 -luuid
 
@@ -70,6 +63,7 @@ which the setup script writes). Mapping details are in `docs/TTS-DESIGN.md`.
 ## Layout
 
 - `host/sapi4host.c` — host: voice select, pitch/speed, text -> WAV
+- `setup/install.sh` — one-shot installer (runs all steps below)
 - `setup/install-deps.sh` — Wine/Winelib/helpers (root)
 - `setup/setup-prefix.sh` — prefix + SAPI4 runtime + MSTTS engine/voices
 - `setup/setup-flextalk.sh` — Flextalk files + registry