Fix PR review comments: spec inconsistencies

1. TextTitle/TextHeading previews: text → children (matches component API)
2. SelectAutocomplete: add iconPrompt to tokens and dependencies table
3. Rust target: rustc 1.75 → 1.85 (2024 edition requires 1.85+)
4. colors.preview: remove nonexistent tokens (textMuted, textDisabled, textOnBackground)
5. PR description: updated to reflect 4 targets and OpenTUI + React for bun

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

Author: basiclines

components/SelectAutocomplete/SelectAutocomplete.md

@@ -7,7 +7,7 @@ category: input
 
 tokens:
   colors: [selected, statusSuccess, textSecondary, textTertiary]
-  icons: [iconSuccess]
+  icons: [iconSuccess, iconPrompt]
 
 types:
   SelectAutocompleteItem:
@@ -356,4 +356,5 @@ due to search input.
 | `textSecondary` | color     | Escape item suffix and no-results message | No       |
 | `textTertiary`  | color     | Search placeholder text                   | No       |
 | `iconSuccess`   | icon      | Current item marker glyph (✓)             | No       |
+| `iconPrompt`    | icon      | Highlighted item indicator (❯)            | Yes      |
 | `HintBar`       | component | Footer keyboard navigation hints          | No       |

components/TextHeading/TextHeading.preview.md

@@ -7,12 +7,12 @@ version: 1
 ## Default
 
 ```props
-text: "Section Heading"
+children: "Section Heading"
 ```
 
 ## Error
 
 ```props
-text: "Error Details"
+children: "Error Details"
 type: error
 ```

components/TextTitle/TextTitle.preview.md

@@ -7,12 +7,12 @@ version: 1
 ## Default
 
 ```props
-text: "Welcome to TUIkit"
+children: "Welcome to TUIkit"
 ```
 
 ## Error
 
 ```props
-text: "Something went wrong"
+children: "Something went wrong"
 type: error
 ```

targets/rust.md

@@ -2,7 +2,7 @@
 kind: target
 name: rust
 language: Rust
-runtime: rustc 1.75+ (2024 edition)
+runtime: rustc 1.85+ (2024 edition)
 framework:
     name: Ratatui
     version: ">=0.28"

tokens/colors.preview.md

@@ -13,7 +13,7 @@ groups: [text, background, status, brand, ui, diff, markdown]
 ## Text tokens
 
 ```props
-tokens: [textPrimary, textSecondary, textMuted, textDisabled, textOnBackground, textOnBackgroundSecondary]
+tokens: [textPrimary, textSecondary, textTertiary, textOnBackgroundSecondary]
 ```
 
 ## Status tokens