Add sentry.replay_id attribute to logs

[denrase]

📜 Description

• Add sentry.replay_id to logs if replay id is set on scope
• Add sentry.replay_id and sentry._internal.replay_is_buffering if replay id is set on integration (buffer mode)

💡 Motivation and Context

I tried this with our sample app, but always got no session, and therefore not replayId, from the integration. Was expecting that we have a buffered session, but i'm probably not familiar with how this is implemented on iOS. I assumed the flow is similar to what we have on Android. NVM, this was on iOS 26 where it's disable. Works as expected on iOS < 26.

Closes #6133

💚 How did you test it?

Unit tests. Sample app.

📝 Checklist

You have to check all boxes before merging:

• I added tests to verify the changes.
• No new PII added or SDK only sends newly added PII if sendDefaultPII is enabled.
• I updated the docs if needed.
• I updated the wizard if needed.
• Review from the native team if needed.
• No breaking change or entry added to the changelog.
• No breaking change for hybrid SDKs or communicated to hybrid SDKs.

[github-actions]

	Messages
📖	Do not forget to update Sentry-docs with your feature once the pull request gets approved.

Generated by 🚫 dangerJS against b6f9b9f

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 85.464%. Comparing base (781f560) to head (b6f9b9f).
⚠️ Report is 3 commits behind head on main.
✅ All tests successful. No failed tests found.

Additional details and impacted files

@@              Coverage Diff              @@
##              main     #6515       +/-   ##
=============================================
+ Coverage   85.234%   85.464%   +0.230%     
=============================================
  Files          451       451               
  Lines        27516     27539       +23     
  Branches     12048     12060       +12     
=============================================
+ Hits         23453     23536       +83     
+ Misses        4019      3958       -61     
- Partials        44        45        +1     

Files with missing lines	Coverage Δ
SentryTestUtils/TestHub.swift	77.419% <100.000%> (+1.557%)	⬆️
Sources/Sentry/SentryHub.m	96.344% <100.000%> (+0.077%)	⬆️
Sources/Swift/Tools/SentryLogger.swift	99.264% <100.000%> (+0.077%)	⬆️

... and 5 files with indirect coverage changes

---

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[cursor]

Bug: Replay Headers Cause Compilation Issues

The SentrySessionReplayIntegration headers are unconditionally imported in SentryPrivate.h. This causes compilation errors on platforms without replay support (e.g., watchOS, macOS without UIKit), as these headers contain code guarded by SENTRY_TARGET_REPLAY_SUPPORTED.

 

[cursor]

Bug: Test Crashes Due to Force-Unwrapping Nullable Property

Tests force-unwrap the sessionReplay property, which is now nullable. This creates a potential for test crashes if sessionReplay is nil, despite its nullable type declaration.

 

[denrase]

Having some trouble with accessing SentrySessionReplayIntegration in swift. Moved the files to SentryPrivate.h, like described in SWIFT.md, but now it is clashing with some build configurations and with SentryHybrid explicit module. Would appreciate some guidance here. 🙇

[philipphofmann]

Having some trouble with accessing SentrySessionReplayIntegration in swift. Moved the files to SentryPrivate.h, like described in SWIFT.md, but now it is clashing with some build configurations and with SentryHybrid explicit module. Would appreciate some guidance here. 🙇

@noahsmartin is good candidate to answer this ⬆️

[denrase]

I was unsuccessful in exposing SentrySessionReplayIntegration/SentrySessionReplay to the Swift SDK, so I opted to add a helper to SentryHub+Private to access the integrations replayId.

[itaybre]

LGTM, once the build issue is fixed

[github-actions]

Performance metrics 🚀

	Plain	With Sentry	Diff
Startup time	1223.71 ms	1270.53 ms	46.82 ms
Size	23.75 KiB	1.02 MiB	1016.83 KiB

Baseline results on branch: main

Startup times

Revision	Plain	With Sentry	Diff
ed85746	1231.79 ms	1248.55 ms	16.75 ms
78af7a9	1225.75 ms	1256.98 ms	31.23 ms
e18d392	1228.69 ms	1244.43 ms	15.73 ms
e8da57d	1203.77 ms	1234.85 ms	31.08 ms
c5bedc0	1203.83 ms	1236.17 ms	32.33 ms
52588a5	1226.24 ms	1257.22 ms	30.98 ms
b9ceffb	1222.57 ms	1247.96 ms	25.39 ms
caa7e70	1233.61 ms	1259.13 ms	25.52 ms
b5a7583	1238.22 ms	1263.94 ms	25.71 ms
5c5648e	1234.44 ms	1253.79 ms	19.35 ms

App size

Revision	Plain	With Sentry	Diff
ed85746	23.75 KiB	920.83 KiB	897.08 KiB
78af7a9	23.75 KiB	990.00 KiB	966.26 KiB
e18d392	23.75 KiB	866.68 KiB	842.93 KiB
e8da57d	23.75 KiB	919.69 KiB	895.94 KiB
c5bedc0	23.75 KiB	920.63 KiB	896.89 KiB
52588a5	23.75 KiB	1.00 MiB	1005.07 KiB
b9ceffb	23.75 KiB	969.07 KiB	945.32 KiB
caa7e70	23.75 KiB	1004.68 KiB	980.94 KiB
b5a7583	23.75 KiB	913.44 KiB	889.68 KiB
5c5648e	23.75 KiB	879.60 KiB	855.86 KiB

Previous results on branch: denrase/replay-id

Startup times

Revision	Plain	With Sentry	Diff
eb3e0ba	1219.57 ms	1261.17 ms	41.60 ms
ba51ef9	1231.84 ms	1263.23 ms	31.40 ms
03778da	1218.05 ms	1246.38 ms	28.34 ms
680b2c2	1221.80 ms	1247.71 ms	25.90 ms

App size

Revision	Plain	With Sentry	Diff
eb3e0ba	23.75 KiB	1.02 MiB	1016.46 KiB
ba51ef9	23.75 KiB	1.02 MiB	1016.45 KiB
03778da	23.75 KiB	1.02 MiB	1016.46 KiB
680b2c2	23.75 KiB	1.00 MiB	1002.99 KiB