Wikipedia command port from grace to ada

[Shadwz17]

Ports Grace's Wikipedia command to Ada as !wiki <query>.

• Adds bot/extensions/wikipedia_extension.py
• No config, dependency, or database changes
• Uses only Python stdlib modules: asyncio, json, and urllib

How it works

• Calls Wikipedia's OpenSearch API, the same endpoint Grace uses.
• Shows the top 3 results as inline links.
• Runs the blocking HTTP request with asyncio.to_thread() so it does not block the bot.
• Uses a 5-second timeout.
• Sends a descriptive User-Agent with the bot name and project URL, following Wikimedia's User-Agent policy.
• Handles:
  • Missing query
  • Query too long
  • No results
  • Wikipedia connection errors
  • Unexpected API response format

Example

User:

!wiki python

Response example:

#### Wikipedia results for "_python_"

> **1.** [Python](<https://en.wikipedia.org/wiki/Python>)
> **2.** [Python (programming language)](<https://en.wikipedia.org/wiki/Python_(programming_language)>)
> **3.** [Monty Python](<https://en.wikipedia.org/wiki/Monty_Python>)

Screenshot:

Error cases

• !wiki → Please provide a search query. Usage: !wiki <search query>
• !wiki asdfghjklqwerty → No results found for 'asdfghjklqwerty'.
• Long query → Search query is too long. Please limit it to 300 characters or less.
• Bad API response → Unexpected response format from Wikipedia API.
• Wikipedia unreachable → Sorry, I couldn't reach Wikipedia.

[PenguinBoi12]

Very good PR so far. It's clean, well typed and you used matrix.py very well. I've let a few comments but only simple stuff. GG so far.

Don't forget to run black . to format the code, add some unit tests and validate types with mypy (although it seems fine).

Well done!!! As always, don't hesitate if you have any questions.

[PenguinBoi12]

Well done! One small change to do in tests (very nothing big) but otherwise it's good.

[PenguinBoi12]

Awesome, well done!