docs(source-smoke-test): improve documentation with config options and corrected changelog date

[devin-ai-integration]

Documentation Confidence Assessment

Overall Confidence: 3/5

Dimension	Score	Rationale
Code Comprehension	4/5	Thin Python wrapper; full spec and scenario definitions read from PyAirbyte source.
API Documentation Quality	5/5	No external API — connector generates synthetic data locally; all behavior verified from source.
Change Scope & Risk	3/5	~89 lines changed: added Configuration section, restructured streams into tables, fixed inaccuracies.
Existing Doc Maturity	1/5	Original doc was 51 lines, missing configuration details and prerequisites.
Connector Sensitivity	5/5	Community connector, alpha release, ql=100, sl=100 — low user impact.
Triggering Context	4/5	Triggered from merged PR for initial connector release with clear scope.

What I Verified vs. What I Inferred

• Verified from code: 5 config fields (names, types, defaults, descriptions) from smoke_test_source/source.py; 14 fast scenarios + 1 slow scenario from _scenarios.py; default behavior excludes slow streams (all_slow_streams defaults to false); large_batch_stream default record count is 1000; custom_scenarios field structure.
• Verified from API docs: N/A — no external API. This connector generates synthetic data.
• Inferred: The custom_scenarios field accepts records, primary_key, and description sub-fields (based on code comments and scenario structure, but not individually tested).

Areas of Concern

• The Configuration section documents fields from the PyAirbyte module, not from the connector's own spec.json. Reviewer should verify these match the actual connector spec at runtime.
• The :::note block framing this as "internal testing" is an editorial judgment — reviewer should confirm this is appropriate.

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What

Improves the source-smoke-test connector documentation, which was missing configuration details and had an incorrect changelog date. Triggered by review of airbytehq/airbyte#75181 (initial release).

How

• Fixed factual inaccuracy: Removed claim that connector "requires no configuration" — it has 5 optional config fields.
• Added Configuration section: Documents all 5 fields (all_fast_streams, all_slow_streams, scenario_filter, large_batch_record_count, custom_scenarios) with types, defaults, and descriptions.
• Fixed changelog date: Corrected from 2026-03-18 to 2026-03-19 to match actual PR merge date.
• Added Prerequisites and Setup guide sections for completeness.
• Converted stream list to tables for readability; added explanation that slow streams are excluded by default.
• Added Namespaces row to Features table.

Review Guide

1. Configuration table (lines 23–29): Do the 5 fields, types, and defaults match the connector's actual spec? Sourced from PyAirbyte's smoke_test_source/source.py.
2. Changelog date (line 77): Verify 2026-03-19 is the correct merge date for PR feat(source-smoke-test): new Smoke Test Source for testing destinations #75181.
3. :::note block (lines 7–9): Editorial addition stating this is for internal testing.

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Note: I am an AI assistant (Devin) and have proposed these documentation updates based on a review of the connector source code and third-party API documentation. Reviewers may merge, modify, or close this PR as they see fit.

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Devin session

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