refactor: remove Password and Textarea from InputType enum

Password type is redundant - masking is controlled by the `secret` boolean
field. Textarea was unused. Updated default-registry.json to use "text"
instead of "password" for secret inputs.

Signed-off-by: Mohammod Al Amin Ashik <maa.ashik00@gmail.com>

Author: its-mash

Cargo.lock

@@ -140,7 +140,7 @@ pub struct InputDefinition {
     pub id: String,
     pub label: String,
     #[serde(default = "default_input_type")]
-    pub r#type: String, // "text", "password", etc.
+    pub r#type: String, // "text", "number", "boolean", "url", etc. Masking controlled by `secret` field.
     #[serde(default)]
     pub required: bool,
     #[serde(default)]

crates/mcpmux-core/src/domain/server.rs

@@ -86,7 +86,7 @@
           "id": "GITHUB_PERSONAL_ACCESS_TOKEN",
           "label": "GitHub Personal Access Token",
           "description": "A GitHub PAT with appropriate repository access",
-          "input_type": "password",
+          "input_type": "text",
           "required": true,
           "secret": true,
           "obtain_url": "https://github.com/settings/tokens",
@@ -225,7 +225,7 @@
           "id": "BRAVE_API_KEY",
           "label": "Brave API Key",
           "description": "Your Brave Search API key",
-          "input_type": "password",
+          "input_type": "text",
           "required": true,
           "secret": true,
           "obtain_url": "https://brave.com/search/api/",
@@ -267,7 +267,7 @@
           "id": "SLACK_BOT_TOKEN",
           "label": "Slack Bot Token",
           "description": "Your Slack bot token (xoxb-...)",
-          "input_type": "password",
+          "input_type": "text",
           "required": true,
           "secret": true,
           "obtain_url": "https://api.slack.com/apps",

crates/mcpmux-core/src/registry/default-registry.json

@@ -50,10 +50,6 @@ pub enum InputType {
     /// Single-line text input
     #[default]
     Text,
-    /// Multi-line text input
-    Textarea,
-    /// Password/secret input (masked)
-    Password,
     /// Boolean toggle
     Boolean,
     /// Numeric input