perf: optimize bindSlice and bindMap allocations

[repyh]

These optimizations remove substantial garbage collection and memory overhead from TypeGo's core reflection bridge when handling large buffers and map structures.

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PR created automatically by Jules for task 17481360139873684640 started by @repyh

Summary by CodeRabbit

• Performance Improvements
  • Improved performance when handling byte slices during Go-to-JavaScript conversions
  • Optimized map iteration and numeric key handling for better runtime efficiency

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[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro

Run ID: 1cac3cf7-241b-4443-9e65-c42191bae2ee

📥 Commits

Reviewing files that changed from the base of the PR and between b85f440 and 9c61dfb.

📒 Files selected for processing (1)

• bridge/core/reflection.go

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📝 Walkthrough

Walkthrough

This PR optimizes Go→JavaScript reflection bindings in bridge/core/reflection.go by adding a fast path for byte slices to convert directly to ArrayBuffer/Uint8Array, and improving map binding efficiency through zero-allocation iteration and faster numeric key stringification.

Changes

Reflection Binding Performance

Layer / File(s)	Summary
Byte slice to ArrayBuffer fast path bridge/core/reflection.go	bindSlice detects []byte slices, copies bytes to an ArrayBuffer, and wraps as Uint8Array when the runtime constructor is available; otherwise returns the raw ArrayBuffer.
Map iteration and key stringification optimization bridge/core/reflection.go	strconv import is added; bindMap replaces MapKeys() iteration with MapRange() to avoid intermediate allocation, and stringifies integer/unsigned integer keys via strconv.FormatInt/FormatUint instead of fmt.Sprint.

🎯 2 (Simple) | ⏱️ ~12 minutes

🐰 Bytes now hop straight to buffers bright,
Maps iterate lighter, keys stringify right!
No slices delayed, no allocations to spare—
Just swift reflection magic in the air. ✨

🚥 Pre-merge checks | ✅ 4 | ❌ 1

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Docstring Coverage	⚠️ Warning	Docstring coverage is 0.00% which is insufficient. The required threshold is 80.00%.	Write docstrings for the functions missing them to satisfy the coverage threshold.

✅ Passed checks (4 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The PR title 'perf: optimize bindSlice and bindMap allocations' accurately summarizes the main changes: performance optimizations to bindSlice and bindMap functions to reduce memory allocations.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

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✨ Finishing Touches

📝 Generate docstrings

• Create stacked PR
• Commit on current branch

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch chore/bindslice-bindmap-optimizations-17481360139873684640

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