docs(ledger): session-6 DHQ reconciliation (087/090/091/092 closed; 093-095 filed)

[kryptobaseddev]

Summary

• Flips DHQ-087 (credential refresh-on-use), DHQ-090 (file-context in fix-gen), DHQ-091 (no-patch audit logging), and DHQ-092 (preflight napi+ripgrep parity) from OPEN to FIXED with PR references.
• Appends ## Session assessment 2026-06-12 (session-6) with a reconciliation header and three new open entries: DHQ-093 (plan-file gitignore breaks release-prepare), DHQ-094 (P1 — selfimprove dirty-tree sweep pushes workspace files to origin), DHQ-095 (capability-unaware model selection 400s on Codex wire).
• No other content changed.

Test plan

• Confirm grep -n "### DHQ-087\|### DHQ-090\|### DHQ-091\|### DHQ-092" shows FIXED status on all four entries.
• Confirm grep -c "### DHQ-093\|### DHQ-094\|### DHQ-095" returns 3.
• Confirm no other lines in the file were modified (git diff main -- docs/plan/dogfood-harness-question-ledger.md).

🤖 Generated with Claude Code