[WIP] Before finish events

[TonyCTHsu]

What does this PR do?

Motivation:

Change log entry

Additional Notes:

How to test the change?

[github-actions]

👋 Hey @DataDog/ruby-guild, please fill "Change log entry" section in the pull request description.

If changes need to be present in CHANGELOG.md you can state it this way

**Change log entry**

Yes. A brief summary to be placed into the CHANGELOG.md

(possible answers Yes/Yep/Yeah)

Or you can opt out like that

**Change log entry**

None.

(possible answers No/Nope/None)

^{Visited at: 2026-04-01 14:03:52 UTC}

[github-actions]

Typing analysis

Note: Ignored files are excluded from the next sections.

steep:ignore comments

This PR introduces 2 steep:ignore comments, and clears 2 steep:ignore comments.

steep:ignore comments (+2-2)

❌ Introduced:

lib/datadog/tracing/span_operation.rb:328
lib/datadog/tracing/span_operation.rb:400

✅ Cleared:

lib/datadog/tracing/span_operation.rb:325
lib/datadog/tracing/span_operation.rb:397

Untyped methods

This PR introduces 6 untyped methods and 2 partially typed methods, and clears 6 untyped methods and 2 partially typed methods.

Untyped methods (+6-6)

❌ Introduced:

sig/datadog/tracing/span_operation.rbs:145
└── def wrap_default: () { (untyped, untyped) -> untyped } -> untyped
sig/datadog/tracing/span_operation.rbs:166
└── def build_span: () -> untyped
sig/datadog/tracing/span_operation.rbs:168
└── def parent=: (untyped parent) -> untyped
sig/datadog/tracing/span_operation.rbs:170
└── def duration_marker: () -> untyped
sig/datadog/tracing/span_operation.rbs:172
└── def start_time_nano: () -> untyped
sig/datadog/tracing/span_operation.rbs:174
└── def duration_nano: () -> untyped

✅ Cleared:

sig/datadog/tracing/span_operation.rbs:139
└── def wrap_default: () { (untyped, untyped) -> untyped } -> untyped
sig/datadog/tracing/span_operation.rbs:160
└── def build_span: () -> untyped
sig/datadog/tracing/span_operation.rbs:162
└── def parent=: (untyped parent) -> untyped
sig/datadog/tracing/span_operation.rbs:164
└── def duration_marker: () -> untyped
sig/datadog/tracing/span_operation.rbs:166
└── def start_time_nano: () -> untyped
sig/datadog/tracing/span_operation.rbs:168
└── def duration_nano: () -> untyped

Partially typed methods (+2-2)

❌ Introduced:

sig/datadog/tracing/span_operation.rbs:143
└── def initialize: (untyped default, ?logger: Core::Logger) -> void
sig/datadog/tracing/span_operation.rbs:147
└── def publish: (*untyped args) -> true

✅ Cleared:

sig/datadog/tracing/span_operation.rbs:137
└── def initialize: (untyped default, ?logger: Core::Logger) -> void
sig/datadog/tracing/span_operation.rbs:141
└── def publish: (*untyped args) -> true

Untyped other declarations

This PR introduces 5 untyped other declarations, and clears 4 untyped other declarations. It decreases the percentage of typed other declarations from 77.73% to 77.68% (-0.05%).

Untyped other declarations (+5-4)

❌ Introduced:

sig/datadog/tracing/span_operation.rbs:114
└── attr_reader before_finish: untyped
sig/datadog/tracing/span_operation.rbs:116
└── attr_reader before_start: untyped
sig/datadog/tracing/span_operation.rbs:157
└── attr_reader events: untyped
sig/datadog/tracing/span_operation.rbs:159
└── attr_reader parent: untyped
sig/datadog/tracing/span_operation.rbs:161
└── attr_reader span: untyped

✅ Cleared:

sig/datadog/tracing/span_operation.rbs:114
└── attr_reader before_start: untyped
sig/datadog/tracing/span_operation.rbs:151
└── attr_reader events: untyped
sig/datadog/tracing/span_operation.rbs:153
└── attr_reader parent: untyped
sig/datadog/tracing/span_operation.rbs:155
└── attr_reader span: untyped

If you believe a method or an attribute is rightfully untyped or partially typed, you can add # untyped:accept on the line before the definition to remove it from the stats.

[datadog-prod-us1-6]

✅ Tests

🎉 All green!

❄️ No new flaky tests detected
🧪 All tests passed

🎯 Code Coverage (details)
• Patch Coverage: 96.83%
• Overall Coverage: 95.36% (-0.03%)

_{This comment will be updated automatically if new data arrives.
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