chore(anchor): re-pin systemet upstream to mainline 0af1a2f6

[hyperpolymath]

Re-pins the ANCHOR off the dead ba5930dc side lineage onto systemet mainline — which now actually contains the ET ledger, the proven ET-2, and accepted ADR-0002. This was the standing "come back down" step; it costs nothing (the old lineage's content was rescued via anytype PR #12 + systemet #17/#24/#27).

Closes #13.

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[gitar-bot]

CI failed: CI failures caused by repository policy violations: a banned Nix file was detected, root directory shape validation failed due to unallowlisted files, and K9 contract files failed validation due to missing required metadata and magic numbers.

Overview

3 unique tool validation failures were encountered in CI, spanning policy enforcement checks on package managers, root directory layout, and K9 contract definitions.

Failures

Nix File Policy Violation (confidence: high)

• Type: tooling
• Affected jobs: 90191423397
• Related to change: unclear
• Root cause: The repository contains flake.nix, which violates the estate-wide policy banning Nix files in favor of Guix.
• Suggested fix: Remove flake.nix and migrate any required package configurations to Guix (guix.scm).

Root Shape Allowlist Failure (confidence: high)

• Type: tooling
• Affected jobs: 90191423411
• Related to change: unclear
• Root cause: Files or directories were added to the repository root without updating the allowlist file (.machine_readable/root-allow.txt).
• Suggested fix: Add the newly introduced root entries to .machine_readable/root-allow.txt or move them into appropriate subdirectories.

K9 Contract Validation Failure (confidence: high)

• Type: tooling
• Affected jobs: 90191423414
• Related to change: unclear
• Root cause: K9 contract files lack mandatory fields, formatting, pedigree blocks, and the required 'K9!' magic number on their first non-empty line.
• Suggested fix: Update all .k9.ncl files to include the 'K9!' magic number and valid pedigree/metadata blocks, or run the local generator tool (k9iser).

Summary

• Change-related failures: 3 tooling and policy validation failures (exact relation to PR unclear from logs alone)
• Infrastructure/flaky failures: 0 infrastructure or flaky test failures
• Recommended action: Remove any banned Nix files, update the root directory allowlist for new root files, and correct the formatting and metadata in the K9 contract files.

Code Review ✅ Approved

Re-pins the ANCHOR upstream dependency to mainline commit 0af1a2f6 to incorporate the ET ledger, ET-2, and accepted ADR-0002. No issues found.

Auto-approved and auto-merge armed: No blocking issues found.
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