perf: cache framework-path checks in console.deprecate frame walk

[Alek99]

All Submissions:

• Have you followed the guidelines stated in CONTRIBUTING.md file?
• Have you checked to ensure there aren't any other open Pull Requests for the desired changed?

Type of change

• Bug fix (non-breaking change which fixes an issue)

Changes To Core Features:

• Have you added an explanation of what your changes do and why you'd like us to include them?

console.deprecate walks the call stack to locate the first non-framework frame so it can report where deprecated usage came from. For every frame on every call — even when the warning is already deduped — it called Path(inspect.getfile(frame)).resolve() (syscalls) and compared the result against ~300 excluded framework/stdlib roots with is_relative_to. That costs multiple milliseconds per call, and deprecated properties on hot paths pay it per access: any handler reading state.router.page eats it on every event. memo.py even carries a local workaround gating its own console.deprecate call for exactly this reason.

Fix: cache the per-filename "is this a framework path?" determination (functools.cache keyed on co_filename — module file locations don't move within a process), and read frame.f_code.co_filename directly instead of inspect.getfile (identical for frames). The frame walk itself stays, so the reported location and the per-call-site dedupe behavior are exactly as before.

The dedupe key includes the call-site location, so a "dedupe-check before walking" shortcut would have changed emission behavior (a second distinct call site would no longer warn); the cache achieves the same goal without any behavior change.

Micro-benchmark (Python 3.13, deduped steady-state deprecate() call through 25 framework-path frames, median of 200 runs):

variant	per call
before	5.73 ms
after	0.038 ms

~150x faster. A side-by-side equivalence harness loads the before/after modules together and asserts byte-identical warning output for: two distinct user call sites of the same feature (both warn), repeat calls (deduped), and a second feature (warns once).

Linear: ENG-10100

🤖 Generated with Claude Code

https://claude.ai/code/session_01Sns7EuBPYvfGCxRSRZ1bUx

---

Generated by Claude Code

[greptile-apps]

Greptile Summary

This PR speeds up console.deprecate frame walking. The main changes are:

• Added cached framework-path classification by code filename.
• Switched frame lookup to frame.f_code.co_filename.
• Added a performance news entry for the change.

Confidence Score: 5/5

This looks safe to merge.

• No blocking issues found in the changed code.

Important Files Changed

Filename	Overview
packages/reflex-base/src/reflex_base/utils/console.py	Adds cached framework-path checks for deprecation frame walking without a concrete behavior regression found.
packages/reflex-base/news/6736.performance.md	Documents the deprecation warning performance improvement.

_{Reviews (1): Last reviewed commit: "chore: add news fragment for #6736" | Re-trigger Greptile}

[codspeed-hq]

Merging this PR will not alter performance

✅ 26 untouched benchmarks
⏩ 8 skipped benchmarks¹

---

_{Comparing claude/reflex-perf-optimizations-21kg8y-deprecate (6f922e7) with main (9a5c4d3)}

Footnotes

1. 8 benchmarks were skipped, so the baseline results were used instead. If they were deleted from the codebase, click here and archive them to remove them from the performance reports. ↩

[linear-code]

ENG-10100