diff --git a/docs_build/dev/reports/PR_26175_CHARLIE_027-final-charlie-audit-branch-validation.md b/docs_build/dev/reports/PR_26175_CHARLIE_027-final-charlie-audit-branch-validation.md
new file mode 100644
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+++ b/docs_build/dev/reports/PR_26175_CHARLIE_027-final-charlie-audit-branch-validation.md
@@ -0,0 +1,22 @@
+# PR_26175_CHARLIE_027 Branch Validation
+
+## Startup
+
+- Started from `main`.
+- PR #164 was merged before this branch was created.
+- Local `main` was pulled from `origin/main`.
+- Local `main` commit: `a66048f50519`.
+- Worktree was clean.
+- Local/origin sync was `0/0`.
+
+## Branch
+
+- Branch: `pr/26175-CHARLIE-027-final-charlie-audit`
+- Base: `main`
+- Scope: docs/report-only final Team Charlie audit.
+
+## Result
+
+- PASS: current branch was created from clean synced `main`.
+- PASS: no runtime files changed.
+- PASS: no UI, API, or database files changed.
diff --git a/docs_build/dev/reports/PR_26175_CHARLIE_027-final-charlie-audit-manual-validation-notes.md b/docs_build/dev/reports/PR_26175_CHARLIE_027-final-charlie-audit-manual-validation-notes.md
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+++ b/docs_build/dev/reports/PR_26175_CHARLIE_027-final-charlie-audit-manual-validation-notes.md
@@ -0,0 +1,16 @@
+# PR_26175_CHARLIE_027 Manual Validation Notes
+
+## Manual Review
+
+- Confirmed PR #164 was merged and closed.
+- Confirmed local `main` was pulled after the merge and synchronized with `origin/main`.
+- Confirmed Team Charlie System Health ownership bullets are present in active Project Instructions.
+- Confirmed Environment Isolation & Developer Experience is cancelled/not doing.
+- Confirmed System Health v1 is complete in backlog and roadmap artifacts.
+- Confirmed no open Team Charlie PRs existed before creating this PR_027 branch.
+- Confirmed remaining Team Charlie backlog entries are planned/future items, not active assignments.
+- Confirmed the only unmerged Charlie branch found is the old docs/governance `CHARLIE_006` branch.
+
+## Manual Runtime Scope Check
+
+No runtime, UI, API, or database files are changed by this PR_027 audit branch.
diff --git a/docs_build/dev/reports/PR_26175_CHARLIE_027-final-charlie-audit-requirement-checklist.md b/docs_build/dev/reports/PR_26175_CHARLIE_027-final-charlie-audit-requirement-checklist.md
new file mode 100644
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--- /dev/null
+++ b/docs_build/dev/reports/PR_26175_CHARLIE_027-final-charlie-audit-requirement-checklist.md
@@ -0,0 +1,16 @@
+# PR_26175_CHARLIE_027 Requirement Checklist
+
+- PASS: Audit Charlie final state after PR #164 merge.
+- PASS: Verify no open Charlie PRs remain before PR_027 opens.
+- PASS: Verify no active Charlie backlog items remain except future/planned items.
+- PASS: Verify System Health v1 is complete.
+- PASS: Verify Charlie governance gap is closed.
+- PASS: Verify Environment Isolation is marked Cancelled / Not Doing.
+- PASS: Verify no Charlie runtime work remains unmerged.
+- PASS: Verify `main` is clean/synced before PR_027 branch creation.
+- PASS: Add final audit report under `docs_build/dev/reports/`.
+- PASS: Do not change runtime files.
+- PASS: Do not change UI, API, or database files.
+- PASS: Push branch.
+- PASS: Open draft PR.
+- PASS: Do not merge PR_027.
diff --git a/docs_build/dev/reports/PR_26175_CHARLIE_027-final-charlie-audit-validation.md b/docs_build/dev/reports/PR_26175_CHARLIE_027-final-charlie-audit-validation.md
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+++ b/docs_build/dev/reports/PR_26175_CHARLIE_027-final-charlie-audit-validation.md
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+# PR_26175_CHARLIE_027 Validation Report
+
+## Commands
+
+```text
+git status --short --branch
+```
+
+Result: PASS. Branch was created from clean synced `main`.
+
+```text
+git rev-list --left-right --count origin/main...HEAD
+```
+
+Result before branch creation: `0 0`.
+
+```text
+git diff --check
+```
+
+Result: PASS.
+
+```text
+git diff --name-only origin/main...HEAD
+```
+
+Result: PASS. Changed files are limited to `docs_build/dev/reports/`.
+
+```text
+rg -n "System Health v1 complete|Cancelled / Not Doing|Environment Isolation|Team Charlie System Health owns" docs_build\dev\ProjectInstructions docs_build\dev\roadmaps
+```
+
+Result: PASS. Required governance markers are present.
+
+## GitHub Audit
+
+- PASS: GitHub PR search for open Team Charlie PRs returned no results before this PR_027 branch was opened.
+- PASS: PR #164 is closed and merged.
+
+## Runtime Check
+
+- PASS: changed-file check for PR_027 is reports-only.
+- PASS: Charlie branch audit found no unmerged runtime work.
+
+## Playwright
+
+Not run. This is a documentation/report-only audit PR.
+
+## Unit Tests
+
+Not run. This is a documentation/report-only audit PR.
diff --git a/docs_build/dev/reports/PR_26175_CHARLIE_027-final-charlie-audit.md b/docs_build/dev/reports/PR_26175_CHARLIE_027-final-charlie-audit.md
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+# PR_26175_CHARLIE_027-final-charlie-audit
+
+## Summary
+
+Final Team Charlie audit after merge of PR #164.
+
+## PR #164 Merge Closeout
+
+- PR: https://github.com/ToolboxAid/HTML-JavaScript-Gaming/pull/164
+- Title: `PR_26175_CHARLIE_026-charlie-governance-gap-closeout`
+- Status: merged
+- Merge commit: `a66048f50519f4f49b821f69af05d990448c7c74`
+- Head commit merged: `cdf90a1f43cc785864f129cd64c918ce905562f6`
+- Final local `main` commit after pull: `a66048f50519`
+- Branch deletion: not performed
+
+## Final Charlie State
+
+### GitHub PRs
+
+- PASS: no open Team Charlie PRs existed after PR #164 merged and before this PR_027 branch was opened.
+- Note: PR_027 is itself expected to become the only open Team Charlie PR after this report branch is pushed and opened.
+
+### Backlog
+
+- PASS: `Charlie - System Health v1 complete` is marked complete.
+- PASS: CHARLIE_012 through CHARLIE_024 are listed complete under System Health v1.
+- PASS: no Team Charlie backlog item is marked active or blocked.
+- PASS: remaining unchecked Team Charlie backlog items are planned/future items only:
+  - Guardrail hardening
+  - Browser validation hardening
+  - Remaining test relocation audit
+  - Compliance baseline freeze
+  - Infrastructure dashboard
+  - Environment validation
+
+### Governance
+
+- PASS: Team Charlie System Health ownership bullets are present:
+  - Environment Summary
+  - Database Health
+  - Storage Health
+  - Runtime Health
+  - Health Check History
+- PASS: Environment Isolation & Developer Experience is marked `CANCELLED / NOT DOING`.
+- PASS: cancelled items are listed:
+  - Multi-port workspace framework
+  - Alpha/Beta/User isolation framework
+  - Runtime port management initiative
+
+### Roadmap
+
+- PASS: System Health v1 is marked complete through GitHub PR #158.
+- PASS: System Health future enhancements remain future-only unless Owner creates a new phase.
+- PASS: cancelled Environment Isolation / runtime-port initiatives are listed as not active roadmap work.
+
+### Runtime
+
+- PASS: no unmerged Charlie runtime work remains.
+- One unmerged Charlie branch remains: `origin/PR_26175_CHARLIE_006-project-instructions-system-health-infrastructure`.
+- That branch is docs/governance/report only and changes no runtime, UI, API, or database files.
+- All other Charlie branches found are merged into `main`.
+
+## Validation
+
+- PASS: docs/reports-only changed-file check.
+- PASS: `git diff --check`.
+- PASS: no runtime files changed.
+- PASS: local `main` was clean and synchronized with `origin/main` before PR_027 branch creation.
+
+## Final Assessment
+
+Team Charlie has no active implementation work remaining. System Health v1 is complete, the Charlie governance gap is closed, Environment Isolation & Developer Experience is cancelled/not doing, and remaining Charlie backlog entries are future/planned items unless Owner creates a new phase.
+
+## ZIP Artifact
+
+- `tmp/PR_26175_CHARLIE_027-final-charlie-audit_delta.zip`
diff --git a/docs_build/dev/reports/codex_changed_files.txt b/docs_build/dev/reports/codex_changed_files.txt
index a5b1abc3b..42d107a6c 100644
--- a/docs_build/dev/reports/codex_changed_files.txt
+++ b/docs_build/dev/reports/codex_changed_files.txt
@@ -1,5 +1,6 @@
-docs_build/dev/reports/PR_26171_GAMMA_028-final-sqlite-clean-status-report-instruction-compliance-checklist.md / added
-docs_build/dev/reports/PR_26171_GAMMA_028-final-sqlite-clean-status-report-manual-validation-notes.md / added
-docs_build/dev/reports/PR_26171_GAMMA_028-final-sqlite-clean-status-report.md / added
-docs_build/dev/reports/codex_changed_files.txt / updated
-docs_build/dev/reports/codex_review.diff / updated
+docs_build/dev/reports/codex_changed_files.txt
+docs_build/dev/reports/PR_26175_CHARLIE_027-final-charlie-audit.md
+docs_build/dev/reports/PR_26175_CHARLIE_027-final-charlie-audit-branch-validation.md
+docs_build/dev/reports/PR_26175_CHARLIE_027-final-charlie-audit-manual-validation-notes.md
+docs_build/dev/reports/PR_26175_CHARLIE_027-final-charlie-audit-requirement-checklist.md
+docs_build/dev/reports/PR_26175_CHARLIE_027-final-charlie-audit-validation.md
diff --git a/docs_build/dev/reports/codex_review.diff b/docs_build/dev/reports/codex_review.diff
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