v0.2.17 - Add --database-path parameter with metadata storage

- Add --database-path/-D command line parameter for database override
- Store actual database and config file paths as metadata in config tables
- Fix circular dependency by making command line overrides runtime-only
- Support multiple relay instances with separate databases and configurations
- Clean path normalization removes redundant ./ prefixes
- New fields: database_location and config_location for tracking actual usage

.gitignore

@@ -7,3 +7,4 @@ Trash/
 src/version.h
 dev-config/
 db/
+copy_executable_local.sh

relay.pid

@@ -1 +1 @@
-943745
+954022

src/config.c

@@ -577,12 +577,20 @@ const char* get_config_value(const char* key) {
         return NULL;
     }
     
-    // Priority 1: Database configuration (updated from file)
+    // Priority 1: Command line overrides via environment variables
+    if (strcmp(key, "relay_port") == 0) {
+        const char* port_override = getenv("C_RELAY_PORT_OVERRIDE");
+        if (port_override) {
+            return port_override;
+        }
+    }
+    
+    // Priority 2: Database configuration (updated from file)
     if (get_database_config(key, buffer, sizeof(buffer)) == 0) {
         return buffer;
     }
     
-    // Priority 2: Environment variables (fallback)
+    // Priority 3: Environment variables (fallback)
     const char* env_value = getenv(key);
     if (env_value) {
         return env_value;

src/main.c

@@ -3113,12 +3113,8 @@ int main(int argc, char* argv[]) {
         return 1;
     }
     
-    // Store database path override in configuration if specified
-    if (database_path_override) {
-        if (set_database_config("database_path", database_path_override, "command_line") != 0) {
-            log_warning("Failed to store database path override in configuration");
-        }
-    }
+    // Database path override is applied via environment variable - no need to store in config
+    // (storing database path in database creates circular dependency)
     
     // Initialize nostr library BEFORE configuration system
     // (required for Nostr event generation in config files)
@@ -3136,15 +3132,74 @@ int main(int argc, char* argv[]) {
         return 1;
     }
     
+    // Store metadata about actual paths used (for reference, not for configuration lookup)
+    if (database_path_override) {
+        // Convert to absolute path and normalize
+        char actual_db_path[1024];
+        if (database_path_override[0] == '/') {
+            // Already absolute
+            strncpy(actual_db_path, database_path_override, sizeof(actual_db_path) - 1);
+        } else {
+            // Make absolute by prepending current working directory
+            char cwd[1024];
+            if (getcwd(cwd, sizeof(cwd))) {
+                // Handle the case where path starts with ./
+                const char* clean_path = database_path_override;
+                if (strncmp(database_path_override, "./", 2) == 0) {
+                    clean_path = database_path_override + 2;
+                }
+                snprintf(actual_db_path, sizeof(actual_db_path), "%s/%s", cwd, clean_path);
+            } else {
+                strncpy(actual_db_path, database_path_override, sizeof(actual_db_path) - 1);
+            }
+        }
+        actual_db_path[sizeof(actual_db_path) - 1] = '\0';
+        
+        if (set_database_config("database_location", actual_db_path, "system") == 0) {
+            log_info("Stored database location metadata");
+        } else {
+            log_warning("Failed to store database location metadata");
+        }
+    }
+    
+    // Store metadata about configuration file path used
+    if (strlen(g_config_manager.config_file_path) > 0) {
+        // Convert to absolute path and normalize
+        char actual_config_path[1024];
+        if (g_config_manager.config_file_path[0] == '/') {
+            // Already absolute
+            strncpy(actual_config_path, g_config_manager.config_file_path, sizeof(actual_config_path) - 1);
+        } else {
+            // Make absolute by prepending current working directory
+            char cwd[1024];
+            if (getcwd(cwd, sizeof(cwd))) {
+                // Handle the case where path starts with ./
+                const char* clean_path = g_config_manager.config_file_path;
+                if (strncmp(g_config_manager.config_file_path, "./", 2) == 0) {
+                    clean_path = g_config_manager.config_file_path + 2;
+                }
+                snprintf(actual_config_path, sizeof(actual_config_path), "%s/%s", cwd, clean_path);
+            } else {
+                strncpy(actual_config_path, g_config_manager.config_file_path, sizeof(actual_config_path) - 1);
+            }
+        }
+        actual_config_path[sizeof(actual_config_path) - 1] = '\0';
+        
+        if (set_database_config("config_location", actual_config_path, "system") == 0) {
+            log_info("Stored configuration location metadata");
+        } else {
+            log_warning("Failed to store configuration location metadata");
+        }
+    }
+    
     // Apply command line overrides AFTER configuration system is initialized
     if (port != DEFAULT_PORT) {
         log_info("Applying port override from command line");
         printf("  Port: %d\n", port);
+        // Set environment variable for port override (runtime only, not persisted)
         char port_str[16];
         snprintf(port_str, sizeof(port_str), "%d", port);
-        if (set_database_config("relay_port", port_str, "command_line") != 0) {
-            log_warning("Failed to set port override in configuration");
-        }
+        setenv("C_RELAY_PORT_OVERRIDE", port_str, 1);
     }
     
     // Initialize NIP-11 relay information