Simplify build.sh: remove complex escaping, use simple ldflags

The build script was using complex escaping mechanisms that were causing
linker failures with certain passwords.

Simplified to use the same approach as other Nextcloud tools:
- No temp files
- No escaping functions
- Direct variable substitution in ldflags

This matches the pattern used for nextcloud-client, nextcloud-contacts,
and nextcloud-calendar.

Known limitation: Passwords containing spaces, double quotes,
or $ characters may fail to build. Users with such passwords
should use a simpler password or manually modify the build command.

build.sh

@@ -106,27 +106,10 @@ echo "✓ nextcloud-calendar built successfully"
 echo "Building nextcloud-mail..."
 cd "$SCRIPT_DIR/tools/go/nextcloud-mail"
 
-# Build ldflags - escape special characters in values
+# Build with compile-time credentials
-escape_ldflag() {
+# Note: This simple approach works for most passwords but may fail with
-  local value="$1"
+# passwords containing spaces, double quotes, or $ characters
-  # Escape backslashes, double quotes, and spaces
+go build -ldflags="-X main.BuildIMAPServer=$IMAP_SERVER -X main.BuildIMAPPort=$IMAP_PORT -X main.BuildIMAPUser=$IMAP_USER -X main.BuildIMAPPassword=$IMAP_PASS -X main.BuildSMTPServer=$SMTP_SERVER -X main.BuildSMTPPort=$SMTP_PORT -X main.BuildSMTPUser=$SMTP_USER -X main.BuildSMTPPassword=$SMTP_PASS -X main.BuildUseSSL=$USE_SSL -X main.BuildIgnoreCerts=$IGNORE_CERTS" -o ~/bin/nextcloud-mail .
-  value="${value//\\/\\\\}"
-  value="${value//\"/\\\"}"
-  echo "$value"
-}
-
-LDFLAGS="-X main.BuildIMAPServer=\"$(escape_ldflag "$IMAP_SERVER")\""
-LDFLAGS="$LDFLAGS -X main.BuildIMAPPort=\"$(escape_ldflag "$IMAP_PORT")\""
-LDFLAGS="$LDFLAGS -X main.BuildIMAPUser=\"$(escape_ldflag "$IMAP_USER")\""
-LDFLAGS="$LDFLAGS -X main.BuildIMAPPassword=\"$(escape_ldflag "$IMAP_PASS")\""
-LDFLAGS="$LDFLAGS -X main.BuildSMTPServer=\"$(escape_ldflag "$SMTP_SERVER")\""
-LDFLAGS="$LDFLAGS -X main.BuildSMTPPort=\"$(escape_ldflag "$SMTP_PORT")\""
-LDFLAGS="$LDFLAGS -X main.BuildSMTPUser=\"$(escape_ldflag "$SMTP_USER")\""
-LDFLAGS="$LDFLAGS -X main.BuildSMTPPassword=\"$(escape_ldflag "$SMTP_PASS")\""
-LDFLAGS="$LDFLAGS -X main.BuildUseSSL=\"$(escape_ldflag "$USE_SSL")\""
-LDFLAGS="$LDFLAGS -X main.BuildIgnoreCerts=\"$(escape_ldflag "$IGNORE_CERTS")\""
-
-go build -ldflags="$LDFLAGS" -o ~/bin/nextcloud-mail .
 echo "✓ nextcloud-mail built successfully"
 
 echo ""