Feature: Selectable Text Length and Test D…

[adithyen]

📌 Description

Brief description of what this PR does.
Add selectable test duration and text length/difficulty settings

🔗 Related Issue

Closes: #64

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New UI Controls (settings_frame)

• Duration selector (ctk.CTkOptionMenu): lets the user choose
  between 15s, 30s, 60s (default), and 120s before starting a test.
• Text length selector (ctk.CTkOptionMenu): lets the user choose
  between Short Sentence, Paragraph, and Long Text difficulty
  tiers.

Expanded Text Pools (TEXT_POOLS)

Category	Content
Short Sentence	10 single-line sentences (~40-60 chars each)
Paragraph	3 multi-sentence paragraphs (~250-350 chars)
Long Text	2 sustained passages (~700-900 chars)

Logic Updates

Area	What changed
start_test()	Reads duration_var and applies it to self.test_duration; disables settings menus during a test.
begin_test()	Reads text_length_var and picks a random text from the matching pool.
update_timer()	Uses self.test_duration instead of the old TEST_DURATION constant.
on_duration_change()	Updates the timer label immediately when the user changes the dropdown (only when idle).
check_result()	Re-enables settings menus after the test completes.
Window geometry	Increased from 720×580 → 750×680 to accommodate the new settings row.

Removed / Replaced

• TEST_DURATION global constant → replaced by DEFAULT_DURATION
  (used only as the initial fallback).
• SENTENCES flat list → replaced by the TEXT_POOLS dictionary.

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📷 Screenshots (if applicable)

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✅ Checklist

• I have tested my changes
• My code follows project guidelines
• I have linked the related issue

[FOSSCLUB-LBSITW]

Hey!there is merge conflict here, please resolve it as soon as possible

[adithyen]

Hey!there is merge conflict here, please resolve it as soon as possible

Hey @FOSSCLUB-LBSITW can you check whether this is fine for merging without any issues or not