Document database semantic convention opt-in

[miachillgood]

Description

Document the database semantic convention migration modes in each instrumentation module that currently supports them. The new sections explain the database and database/dup values, comma-separated opt-ins, and the legacy default behavior.

Because the instrumentation reference pages render these module docstrings, the guidance appears directly in each affected package's documentation.

Fixes #4980

Type of change

• This change requires a documentation update

How Has This Been Tested?

• Compiled all 13 changed Python modules with python3 -m compileall
• Ran uvx pre-commit run --files <changed files> (ruff, ruff-format, and Towncrier formatting passed)

Does This PR Require a Core Repo Change?

• No.

Checklist:

• Followed the style guidelines of this project
• Changelogs have been updated
• Unit tests have been added (not applicable: documentation-only change)
• Documentation has been updated

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Waiting on reviewers · refreshed 2026-08-22 05:24 UTC

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