Feature: Random Text Generation with AI / API #66

[adithyen]

📌 Description

Brief description of what this PR does.
Adds a template-based random text generator using a local word bank of 200+
common English words organized by category (nouns, verbs, adjectives, adverbs,
connectors, prepositions, determiners). Sixteen sentence templates produce
grammatically sensible but completely unpredictable text, eliminating the
memorization problem with static sentences.

Users can switch between "Random Generated" and "Classic Static" modes
via a new dropdown in the settings panel.

🔗 Related Issue

Closes: #66

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Combinatorial Analysis

Component	Pool Size
Nouns	73
Verbs	53
Adjectives	41
Adverbs	26
Connectors	23
Prepositions	20
Determiners	15
Templates	16

Per-sentence combinations: 16 × 73 × 53 × 41 × 26 × 23 × 20 × 15
= ~232 billion unique sentences

For a "Long Text" (7-10 sentences), the combinations are astronomically large —
memorization is effectively impossible.

Changes Made

New Components

Component	Description
WORD_BANK (dict)	200+ common English words in 7 categories
SENTENCE_TEMPLATES (list)	16 sentence structure templates with {placeholders}
generate_sentence()	Picks random template + random words → one sentence
generate_text(mode)	Generates 1 / 3-5 / 7-10 sentences based on text length mode
STATIC_TEXT_POOLS	Renamed from TEXT_POOLS — the original static texts preserved
TEXT_SOURCE_OPTIONS	["Random Generated", "Classic Static"]
self.text_source_var	StringVar for text source dropdown
self.text_source_menu	CTkOptionMenu in settings frame (row 1)
self.get_test_text()	Routes to generator or static pool based on selected source

Modified Components

Component	What Changed
self.settings_frame	Added row 1 with "Text Source" label + dropdown
begin_test()	Now calls self.get_test_text() instead of directly accessing pool
start_test()	Also disables/enables self.text_source_menu during test
check_result()	Also re-enables self.text_source_menu on completion
Window geometry	750×720 → 780×750 (fits extra settings row)
Sentence frame	680×120 → 700×130 (slightly larger for longer generated text)
Input box width	660 → 680 (proportional)

No Changes To

• calculate_current_wpm() — unchanged
• update_live_wpm() — unchanged
• update_timer() — unchanged
• toggle_pause() — unchanged
• handle_typing() — unchanged
• update_sentence_display() — unchanged
• update_streaks() — unchanged
• load_data() / save_data() — unchanged
• streak_data.json schema — unchanged
• beep() wrapper — unchanged
• DURATION_OPTIONS — unchanged
• TEXT_LENGTH_OPTIONS — unchanged

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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 some merge conflict here. Please resolve it as soon as possible