diff --git a/.project-docs/30-worklog/current-state.md b/.project-docs/30-worklog/current-state.md
index f6b09c7..590fe94 100644
--- a/.project-docs/30-worklog/current-state.md
+++ b/.project-docs/30-worklog/current-state.md
@@ -6,7 +6,8 @@ This file is the integrated default-branch snapshot. Feature tasks record progre
 
 - `c44274f` (rebased integration of `84d84ba`, task `20260812-rds-postgres-adapter-7f2c1a`)
 - `79d29bb` (cross-platform ACK manifest validation fix)
-- `4485899` (Next.js frontend plus Go backend target design and explicit not-implemented progress record)
+- `4485899` (task-scoped Next.js frontend plus Go backend target design and explicit not-implemented progress record)
+- `064e155` (canonical ADR-003, architecture, current-state, history, and commitment promotion)
 
 ## Current Focus
 
diff --git a/.project-docs/30-worklog/tasks/20260812-finalize-go-design-91da3c.md b/.project-docs/30-worklog/tasks/20260812-finalize-go-design-91da3c.md
new file mode 100644
index 0000000..5801112
--- /dev/null
+++ b/.project-docs/30-worklog/tasks/20260812-finalize-go-design-91da3c.md
@@ -0,0 +1,47 @@
+# Task: Finalize Next and Go design documentation
+
+## Identity
+
+- Task ID: 20260812-finalize-go-design-91da3c
+- Mode: Integration
+- Branch: codex/20260812-finalize-go-design-91da3c-finalize-go-design
+- Worktree: D:\Datas\OthersProjects\NianAIGC-go-docs-final-91da3c
+- Base commit: 064e155b2f63583733624061706604ae909256d5
+- Owner: codex
+- Status: Ready for Integration
+
+## Scope
+
+- Validate the fixed documentation integration head `064e155` against the source proposal, accepted human direction, canonical project memory, and repository diff.
+- Correct canonical integration metadata and prepare a documentation-only fast-forward merge into `main`.
+- Preserve the unrelated untracked runtime configuration task record already present in the occupied `main` worktree.
+
+## Intent And Constraints
+
+- Merge only design and progress documentation; no application, Go, SQL, Docker, package, ACK, or runtime configuration changes.
+- Keep current ACK-001 implementation facts separate from accepted-but-unimplemented ADR-003.
+- Treat source feature and superseded integration task records as read-only.
+- Require task-aware drift validation and independent Sol review before updating `main`.
+
+## Outcome
+
+- Validated that the integration range from `main@a235266` through `064e155` changes only `.project-docs`.
+- Confirmed ADR-003 records the approved target while current state accurately says the Go migration has not started.
+- Corrected `Integrated Through` to include both the task-scoped design commit and canonical promotion commit.
+- No code or deployment artifact was integrated.
+
+## Verification
+
+- Inspected source task records, detailed proposal, ADR-003, decision index, system overview, module map, data flow, current state, history, and commitments.
+- `git diff a235266..064e155 --name-status` lists only project-document paths.
+- Task-aware drift check passed.
+- Independent final Sol review returned PASS with no blockers: all integrated changes are project documentation, ADR-003 remains implementation-pending, ACK-001 remains current truth, and the occupied main worktree's untracked runtime-config task record is byte-identical to the tracked integration blob.
+
+## Follow-ups
+
+- Go implementation remains a future task gated by executable compatibility tests.
+- Live RDS/ACK/OSS/provider verification remains open for the currently implemented architecture.
+
+## Promotion Candidates
+
+- None recorded.