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docs: warn that agentsMd shadows PVC files at the same path#376

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Joseph19820124 wants to merge 1 commit intoopenabdev:mainfrom
Joseph19820124:fix/360-agentsMd-shadows-pvc-warning
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docs: warn that agentsMd shadows PVC files at the same path#376
Joseph19820124 wants to merge 1 commit intoopenabdev:mainfrom
Joseph19820124:fix/360-agentsMd-shadows-pvc-warning

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Summary

Fixes #360

When agentsMd is set in Helm values, the ConfigMap volumeMount silently shadows any existing file at the same path on the PVC (AGENTS.md, CLAUDE.md, GEMINI.md, etc.). The PVC file is not deleted but becomes invisible to the agent. This is standard Kubernetes behaviour but there was no documentation warning about it.

Changes

charts/openab/values.yaml

Added an inline comment next to agentsMd in the active agent block and both commented-out example blocks explaining the shadowing behaviour and how to restore PVC files.

docs/openab-upgrade-sop.md

Added a callout under "Pay special attention to" in Section I (Read the Release Notes) so operators are reminded to check their agentsMd setting before upgrading.

No code changes

This is a documentation-only fix. No logic, templates, or chart behaviour was modified.

When agentsMd is set, the ConfigMap volumeMount takes precedence over
any existing file at the same path on the PVC (AGENTS.md, CLAUDE.md,
GEMINI.md, etc.). The PVC file is not deleted but becomes invisible to
the agent with no warning emitted.

- Add inline comment in values.yaml next to agentsMd explaining the
  shadowing behaviour (active block + both commented-out examples)
- Add a callout in the upgrade SOP (Section I, step 2) so operators
  are reminded to check agentsMd before upgrading

Fixes openabdev#360
@github-actions github-actions bot added the closing-soon PR missing Discord Discussion URL — will auto-close in 3 days label Apr 15, 2026
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⚠️ This PR is missing a Discord Discussion URL in the body.

All PRs must reference a prior Discord discussion to ensure community alignment before implementation.

Please edit the PR description to include a link like:

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🔒 Auto-closing: this PR has had the closing-soon label for more than 3 days without a Discord Discussion URL being added.

Feel free to reopen after adding the discussion link to the PR body.

@github-actions github-actions bot closed this Apr 19, 2026
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agentsMd ConfigMap silently shadows existing PVC files

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