chore(cel): add support for custom caching key/time

[yashmehrotra]

Summary by CodeRabbit

• New Features

  • Templates now support explicit cache key configuration and custom expiration times for improved cache management and optimization.

• Tests

  • Enhanced test coverage for cache key behavior, expiration validation, and cross-data program reuse scenarios.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: CHILL

Plan: Pro

Run ID: 2b033be5-37cb-4d62-9543-03e35fb8c33e

📥 Commits

Reviewing files that changed from the base of the PR and between c8f67a2 and 613b482.

📒 Files selected for processing (2)

• template.go
• template_test.go

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Walkthrough

This PR adds explicit caching control to the Template struct via new CacheKey and CacheTime fields, replacing the public CacheKey(env) method with internal key-selection helpers. CEL and Go template caches now store entries using the new cacheKey logic with configurable TTL instead of default cache behavior.

Changes

Template Caching Control

Layer / File(s)	Summary
Cache configuration and key selection template.go	Template struct adds optional CacheKey string and CacheTime duration fields. autoCacheKey(env) derives keys from template fields; cacheKey(env) returns explicit CacheKey if set, otherwise falls back to auto-derived key. IsCacheable logic updated.
CEL expression caching with TTL template.go	CEL program cache lookup uses cacheKey(_environment); compilation via env.Program(ast) (no cel.Globals(data)); cached programs now stored with CacheTime TTL using Set(key, program, duration) instead of default insertion.
Go template caching with TTL template.go	Go template cache lookup uses cacheKey(nil). Compiled templates stored via goTemplateCache.Set(cacheKey(nil), template, CacheTime) instead of default cache behavior.
Cache control and TTL validation tests template_test.go	Imports time for TTL checks. TestCacheKeyConsistency updated to use cacheKey. New tests: TestExplicitCacheKey validates explicit key override and IsCacheable behavior; TestCacheTime validates no-expiration (-1), short TTL, and default TTL scenarios via GetWithExpiration; TestRunExpressionReusesProgramAcrossDifferentData confirms program cache reuse without data leakage across calls.

🚥 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 accurately describes the main change: adding support for custom caching control via CacheKey and CacheTime fields, with proper emphasis on the CEL expression caching improvements.
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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• Commit unit tests in branch sup-cache

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[yashmehrotra]

@moshloop Self merging this. Let me know if any changes were needed, will address them in a separate PR