Authentication: noisy SNOWFLAKE_HOME log messages

System details:

Positron and OS details:

Version: Positron Version: 2026.06.0 build 79
Code - OSS Version: 1.111.0
Commit: 5831c6625ad95f6f2e0a42034bd6c7e689214a7d
Date: 2026-05-17T11:26:46-04:00
Commit: 39.6.0
Date: 142.0.7444.265
Electron: 22.22.0
ElectronBuildId: 14.2.231.22-electron.0
Chromium: Darwin arm64 25.4.0
Node.js: undefined
V8: undefined
OS: undefined

Session details:

Snowflake provider with API key on Desktop

Describe the issue:

After logging in with Snowflake API key, look at Authentication extension output channel:

"copilot-auth"
2026-05-14 15:38:27.532 [warning] [Snowflake Auth] No SNOWFLAKE_HOME configured - unable to determine connections.toml path
2026-05-14 15:38:32.552 [warning] [Snowflake Auth] No SNOWFLAKE_HOME configured - unable to determine connections.toml path

Expected or desired behavior:

• We should probably only log [Snowflake Auth] No SNOWFLAKE_HOME configured - unable to determine connections.toml path when running on Workbench, since SNOWFLAKE_HOME and connetions.toml are not really relevant on Desktop.
• It's probably enough to only log it once if we encounter it

Start by tracing the Authentication extension output channel and the Snowflake authentication handling that emits the SNOWFLAKE_HOME warning. Reproduce the Desktop API-key login, then verify that the warning is limited to relevant Workbench cases and is not emitted repeatedly when the setting is absent.