docs: replace main branch references with master (#3194)

The repository uses master as the default branch, but many documentation
files and scripts were referencing main branch URLs that would 404.

Updated all references from zeroclaw-labs/zeroclaw/main to
zeroclaw-labs/zeroclaw/master in README files and documentation.

Fixes #2929
Fixes #3061

Co-authored-by: Argenis <theonlyhennygod@gmail.com>

Author: darrenzeng2025

README.ar.md

@@ -221,7 +221,7 @@ ls -lh target/release/zeroclaw
 يقوم نص `bootstrap.sh` بتثبيت Rust ونسخ ZeroClaw وتجميعه وإعداد بيئة التطوير الأولية الخاصة بك:
 
 ```bash
-curl -fsSL https://raw.githubusercontent.com/zeroclaw-labs/zeroclaw/main/bootstrap.sh | bash
+curl -fsSL https://raw.githubusercontent.com/zeroclaw-labs/zeroclaw/master/bootstrap.sh | bash
 ```
 
 سيقوم هذا بـ:

README.cs.md

@@ -221,7 +221,7 @@ Ukázková vzorka (macOS arm64, měřeno 18. února 2026):
 Skript `bootstrap.sh` nainstaluje Rust, naklonuje ZeroClaw, zkompiluje ho a nastaví vaše počáteční vývojové prostředí:
 
 ```bash
-curl -fsSL https://raw.githubusercontent.com/zeroclaw-labs/zeroclaw/main/bootstrap.sh | bash
+curl -fsSL https://raw.githubusercontent.com/zeroclaw-labs/zeroclaw/master/bootstrap.sh | bash
 ```
 
 Toto:

README.de.md

@@ -225,7 +225,7 @@ Beispielstichprobe (macOS arm64, gemessen am 18. Februar 2026):
 Das `bootstrap.sh`-Skript installiert Rust, klont ZeroClaw, kompiliert es und richtet deine anfängliche Entwicklungsumgebung ein:
 
 ```bash
-curl -fsSL https://raw.githubusercontent.com/zeroclaw-labs/zeroclaw/main/bootstrap.sh | bash
+curl -fsSL https://raw.githubusercontent.com/zeroclaw-labs/zeroclaw/master/bootstrap.sh | bash
 ```
 
 Dies wird:

README.es.md

@@ -221,7 +221,7 @@ Ejemplo de muestra (macOS arm64, medido el 18 de febrero de 2026):
 El script `bootstrap.sh` instala Rust, clona ZeroClaw, lo compila, y configura tu entorno de desarrollo inicial:
 
 ```bash
-curl -fsSL https://raw.githubusercontent.com/zeroclaw-labs/zeroclaw/main/bootstrap.sh | bash
+curl -fsSL https://raw.githubusercontent.com/zeroclaw-labs/zeroclaw/master/bootstrap.sh | bash
 ```
 
 Esto:

README.fr.md

@@ -219,7 +219,7 @@ Exemple d'échantillon (macOS arm64, mesuré le 18 février 2026) :
 Le script `install.sh` installe Rust, clone ZeroClaw, le compile, et configure votre environnement de développement initial :
 
 ```bash
-curl -fsSL https://raw.githubusercontent.com/zeroclaw-labs/zeroclaw/main/install.sh | bash
+curl -fsSL https://raw.githubusercontent.com/zeroclaw-labs/zeroclaw/master/install.sh | bash
 ```
 
 Ceci va :

README.it.md

@@ -221,7 +221,7 @@ Esempio di campione (macOS arm64, misurato il 18 febbraio 2026):
 Lo script `bootstrap.sh` installa Rust, clona ZeroClaw, lo compila, e configura il tuo ambiente di sviluppo iniziale:
 
 ```bash
-curl -fsSL https://raw.githubusercontent.com/zeroclaw-labs/zeroclaw/main/bootstrap.sh | bash
+curl -fsSL https://raw.githubusercontent.com/zeroclaw-labs/zeroclaw/master/bootstrap.sh | bash
 ```
 
 Questo:

README.ko.md

@@ -221,7 +221,7 @@ ls -lh target/release/zeroclaw
 `bootstrap.sh` 스크립트는 Rust를 설치하고, ZeroClaw를 클론하고, 컴파일하고, 초기 개발 환경을 설정합니다:
 
 ```bash
-curl -fsSL https://raw.githubusercontent.com/zeroclaw-labs/zeroclaw/main/bootstrap.sh | bash
+curl -fsSL https://raw.githubusercontent.com/zeroclaw-labs/zeroclaw/master/bootstrap.sh | bash
 ```
 
 이 작업은 다음을 수행합니다:

README.md

@@ -208,7 +208,7 @@ Example sample (macOS arm64, measured on February 18, 2026):
 Or skip the steps above and install everything (system deps, Rust, ZeroClaw) in a single command:
 
 ```bash
-curl -LsSf https://raw.githubusercontent.com/zeroclaw-labs/zeroclaw/main/install.sh | bash
+curl -LsSf https://raw.githubusercontent.com/zeroclaw-labs/zeroclaw/master/install.sh | bash
 ```
 
 #### Compilation resource requirements
@@ -281,7 +281,7 @@ ZEROCLAW_CONTAINER_CLI=podman ./install.sh --docker
 Remote one-liner (review first in security-sensitive environments):
 
 ```bash
-curl -fsSL https://raw.githubusercontent.com/zeroclaw-labs/zeroclaw/main/install.sh | bash
+curl -fsSL https://raw.githubusercontent.com/zeroclaw-labs/zeroclaw/master/install.sh | bash
 ```
 
 Details: [`docs/setup-guides/one-click-bootstrap.md`](docs/setup-guides/one-click-bootstrap.md) (toolchain mode may request `sudo` for system packages).

README.nl.md

@@ -221,7 +221,7 @@ Voorbeeld monster (macOS arm64, gemeten op 18 februari 2026):
 Het `bootstrap.sh` script installeert Rust, kloont ZeroClaw, compileert het, en stelt je initiële ontwikkelomgeving in:
 
 ```bash
-curl -fsSL https://raw.githubusercontent.com/zeroclaw-labs/zeroclaw/main/bootstrap.sh | bash
+curl -fsSL https://raw.githubusercontent.com/zeroclaw-labs/zeroclaw/master/bootstrap.sh | bash
 ```
 
 Dit zal:

README.pl.md

@@ -221,7 +221,7 @@ Przykładowa próbka (macOS arm64, zmierzone 18 lutego 2026):
 Skrypt `bootstrap.sh` instaluje Rust, klonuje ZeroClaw, kompiluje go i konfiguruje twoje początkowe środowisko deweloperskie:
 
 ```bash
-curl -fsSL https://raw.githubusercontent.com/zeroclaw-labs/zeroclaw/main/bootstrap.sh | bash
+curl -fsSL https://raw.githubusercontent.com/zeroclaw-labs/zeroclaw/master/bootstrap.sh | bash
 ```
 
 To: