Add more levels and change XP algorithm

[lulunac27a]

Added more levels and changed the XP algorithm for earning XP points in a commit.

Summary by Sourcery

Extend the gamification system with higher-level progression and adjust commit XP calculations to reward multi-file changes more strongly and allow higher per-commit XP.

New Features:

• Add progression levels 16–100 with increasing XP thresholds and new high-rank titles for advanced contributors.

Enhancements:

• Increase the weight of files-changed in commit XP calculation and adopt a steeper logarithmic scaling formula for XP growth.
• Raise the per-commit XP cap to scale with user level, allowing significantly higher rewards for higher-level contributors.

[sourcery-ai]

Reviewer's Guide

Extends the gamification level table up to level 100 and makes XP per-commit more generous and more strongly influenced by multi-file changes via updated weighting, scaling, and caps in calculate_commit_xp.

File-Level Changes

Change	Details	Files
Extend the gamification level progression up to level 100 with higher thresholds and new titles.	Added levels 16–100 to the levels configuration list with increasing XP thresholds. Introduced new title tiers (Legendary Programmer, Master Coder, Diamond Scripter) for higher levels. Kept some higher levels sharing the same title across ranges with progressively higher thresholds.	commit_checker/gamification.py
Adjust XP calculation to reward multi-file commits more and increase potential XP per commit with modified scaling and caps.	Increased the default XP weight for files_changed from 2.0 to 5.0 in the xp_weights configuration and its usage in base_xp. Changed the logarithmic scaling formula for base_xp to a steeper, multiplicative log-based curve using math.log(1 + base_xp) * (1 + math.log(1 + base_xp) / 5) * 10. Replaced the previous max XP per commit cap (min(50, 15 + current_level * 3)) with a more generous linear cap of 100 + current_level * 10.	commit_checker/gamification.py

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[sourcery-ai]

Hey - I've found 1 issue, and left some high level feedback:

• The extended levels list is now a very large hard-coded structure with many repeated titles; consider generating thresholds and titles programmatically (e.g., via formulas and ranges) to reduce maintenance cost and potential for inconsistencies.
• The XP calculation now hard-codes much larger weights, a more aggressive scaling formula, and a much higher level-dependent cap; it would be safer to move these magic numbers into configuration so they can be tuned without code changes and to avoid unexpected XP inflation.
• The new max_xp formula 100 + (current_level * 10) grows without a fixed upper bound and removes the previous safety cap of 50; you may want to reintroduce an absolute ceiling to prevent very high-level users from gaining extremely large XP from a single commit.

Prompt for AI Agents

Please address the comments from this code review:

## Overall Comments
- The extended levels list is now a very large hard-coded structure with many repeated titles; consider generating thresholds and titles programmatically (e.g., via formulas and ranges) to reduce maintenance cost and potential for inconsistencies.
- The XP calculation now hard-codes much larger weights, a more aggressive scaling formula, and a much higher level-dependent cap; it would be safer to move these magic numbers into configuration so they can be tuned without code changes and to avoid unexpected XP inflation.
- The new max_xp formula `100 + (current_level * 10)` grows without a fixed upper bound and removes the previous safety cap of 50; you may want to reintroduce an absolute ceiling to prevent very high-level users from gaining extremely large XP from a single commit.

## Individual Comments

### Comment 1
<location> `commit_checker/gamification.py:626` </location>
<code_context>
         if base_xp > 0:
             import math
-            scaled_xp = math.log(1 + base_xp) * 8  # Logarithmic scaling
+            scaled_xp = math.log(1 + base_xp) * (1 + math.log(1 + base_xp) / 5) * 10  # Logarithmic scaling
         else:
             scaled_xp = get_base_commit_xp(config)
</code_context>

<issue_to_address>
**question (bug_risk):** The new scaling formula is closer to quadratic in log(base_xp), which may significantly increase XP at higher ranges.

This new term `(1 + log(1 + base_xp)/5) * 10` makes XP growth roughly proportional to `log(base_xp)^2` at large values, which may actually accelerate XP gain for very large commits rather than dampening it. Consider plotting old vs new XP over a realistic `base_xp` range to confirm it matches the intended progression and doesn’t introduce large jumps for big refactors.
</issue_to_address>

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[sourcery-ai]

question (bug_risk): The new scaling formula is closer to quadratic in log(base_xp), which may significantly increase XP at higher ranges.

This new term (1 + log(1 + base_xp)/5) * 10 makes XP growth roughly proportional to log(base_xp)^2 at large values, which may actually accelerate XP gain for very large commits rather than dampening it. Consider plotting old vs new XP over a realistic base_xp range to confirm it matches the intended progression and doesn’t introduce large jumps for big refactors.