[eas-cli] Ingest realtime incrementally instead of rebuilding full logs on every message

[AHGIJMKLKKZNPJKQR]

Why

Logs displayed by workflow:run --wait rebuild the entire stored logs on every realtime logs message, which hurts the performance when displaying large workflow runs with many MB of logs.

How

• Updated WorkflowJobLogsState to maintain the current parsed logs and update them in place on realtime logs publications instead of rebuilding them from scratch on every publication.
• Updated groupLogLinesIntoSteps to take an accumulator argument for the result instead of building it from scratch
• Updated stepLogTail to slice then map, to prevent iterating over log lines

Separated this out of #4228 because I didn't want to complicate that PR too much. We should merge this into #4228 before merging to main.

Test Plan

CI passes with new tests, workflow:run --wait tested manually

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File Patterns	Mentions
packages/eas-cli/**	@douglowder

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[Copilot]

Pull request overview

Improves the performance of workflow:run --wait log rendering by switching workflow job log state management from “rebuild everything on every realtime message” to incremental in-place updates, reducing repeated parsing/grouping work for large log streams.

Changes:

• Refactored WorkflowJobLogsState to maintain grouped logs incrementally and reveal buffered realtime logs at the appropriate time (catch-up or completion).
• Updated log parsing/grouping to support an accumulator (groupLogLinesIntoSteps) and tracked step result separately to avoid recomputation.
• Adjusted rendering/helpers and expanded Jest coverage for the new incremental behavior.

Reviewed changes

Copilot reviewed 7 out of 7 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
packages/eas-cli/src/commandUtils/workflow/utils.ts	Uses precomputed step result, optimizes tail rendering, and marks completed jobs to reveal buffered realtime logs without rebuilding.
packages/eas-cli/src/commandUtils/workflow/types.ts	Introduces StepLogs and extends per-step log state with optional result.
packages/eas-cli/src/commandUtils/workflow/logs/watcher.ts	Implements incremental ingestion/deduping of realtime log lines and incremental grouping into a persistent WorkflowLogs map.
packages/eas-cli/src/commandUtils/workflow/logs/parseLogs.ts	Adds accumulator support to groupLogLinesIntoSteps and captures first end-marker result per step.
packages/eas-cli/src/commandUtils/workflow/logs/tests/watcher-test.ts	Updates/extends tests to validate incremental ingestion, completion reveal, and deduplication.
packages/eas-cli/src/commandUtils/workflow/logs/tests/parseLogs-test.ts	Adds tests for step result capture semantics (first end marker wins, undefined before end).
packages/eas-cli/src/commandUtils/workflow/tests/utils-test.ts	Expands formatting tests (default tail size, current step selection, skipped handling, non-in-progress behavior, failed-step output).

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[codecov]

Codecov Report

❌ Patch coverage is 72.72727% with 15 lines in your changes missing coverage. Please review.
⚠️ Please upload report for BASE (realtime-logs@67dfdbb). Learn more about missing BASE report.

Files with missing lines	Patch %	Lines
...ackages/eas-cli/src/commandUtils/workflow/utils.ts	28.58%	15 Missing ⚠️

Additional details and impacted files

@@               Coverage Diff                @@
##             realtime-logs    #4293   +/-   ##
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  Coverage                 ?   64.74%           
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  Files                    ?     1052           
  Lines                    ?    48694           
  Branches                 ?    10257           
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  Hits                     ?    31523           
  Misses                   ?    17055           
  Partials                 ?      116           

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