diff --git a/.github/workflows/go.yml b/.github/workflows/go.yml
index eaecb9b27..933661899 100644
--- a/.github/workflows/go.yml
+++ b/.github/workflows/go.yml
@@ -44,7 +44,7 @@ jobs:
       run: go test -race -coverprofile=coverage.out ./... -timeout=10m
 
     - name: Upload Coverage to Codecov
-      uses: codecov/codecov-action@v3
+      uses: codecov/codecov-action@v4
       with:
         files: ./coverage.out
         flags: unittests
diff --git a/docs/technical-debt.md b/docs/technical-debt.md
index a389b0ca9..99c8ff091 100644
--- a/docs/technical-debt.md
+++ b/docs/technical-debt.md
@@ -1,6 +1,6 @@
 # Erupe Technical Debt & Suggested Next Steps
 
-> Analysis date: 2026-02-22
+> Last updated: 2026-02-22
 
 This document tracks actionable technical debt items discovered during a codebase audit. It complements `anti-patterns.md` (which covers structural patterns) by focusing on specific, fixable items with file paths and line numbers.
 
@@ -9,15 +9,12 @@ This document tracks actionable technical debt items discovered during a codebas
 - [High Priority](#high-priority)
   - [1. Broken game features (gameplay-impacting TODOs)](#1-broken-game-features-gameplay-impacting-todos)
   - [2. Test gaps on critical paths](#2-test-gaps-on-critical-paths)
-  - [3. Sign server has no repository layer](#3-sign-server-has-no-repository-layer)
 - [Medium Priority](#medium-priority)
-  - [4. Split repo_guild.go](#4-split-repo_guildgo)
-  - [5. Logging anti-patterns](#5-logging-anti-patterns)
-  - [6. Inconsistent transaction API](#6-inconsistent-transaction-api)
-  - [7. LoopDelay config has no Viper default](#7-loopdelay-config-has-no-viper-default)
+  - [3. Logging anti-patterns](#3-logging-anti-patterns)
+  - [4. Typos and stale comments](#4-typos-and-stale-comments)
 - [Low Priority](#low-priority)
-  - [8. Typos and stale comments](#8-typos-and-stale-comments)
-  - [9. CI updates](#9-ci-updates)
+  - [5. CI updates](#5-ci-updates)
+- [Completed Items](#completed-items)
 - [Suggested Execution Order](#suggested-execution-order)
 
 ---
@@ -31,31 +28,26 @@ These TODOs represent features that are visibly broken for players.
 | Location | Issue | Impact |
 |----------|-------|--------|
 | `model_character.go:88,101,113` | `TODO: fix bookshelf data pointer` for G10-ZZ, F4-F5, and S6 versions | Wrong pointer corrupts character save reads for three game versions |
-| ~~`handlers_guild.go:389`~~ | ~~`TODO: Implement month-by-month tracker` — always returns `0x01` (claimed)~~ | ~~Players can never claim monthly guild items~~ **Fixed.** Now tracks per-character per-type monthly claims via `stamps` table. |
 | `handlers_guild_ops.go:148` | `TODO: Move this value onto rp_yesterday and reset to 0... daily?` | Guild daily RP rollover logic is missing entirely |
 | `handlers_achievement.go:125` | `TODO: Notify on rank increase` — always returns `false` | Achievement rank-up notifications are silently suppressed |
 | `handlers_guild_info.go:443` | `TODO: Enable GuildAlliance applications` — hardcoded `true` | Guild alliance applications are always open regardless of setting |
-| `handlers_session.go:397` | `TODO(Andoryuuta): log key index off-by-one` | Known off-by-one in log key indexing is unresolved |
-| `handlers_session.go:577` | `TODO: This case might be <=G2` | Uncertain version detection in switch case |
-| `handlers_session.go:777` | `TODO: Retail returned the number of clients in quests` | Player count reported to clients does not match retail behavior |
+| `handlers_session.go:394` | `TODO(Andoryuuta): log key index off-by-one` | Known off-by-one in log key indexing is unresolved |
+| `handlers_session.go:535` | `TODO: This case might be <=G2` | Uncertain version detection in switch case |
+| `handlers_session.go:698` | `TODO: Retail returned the number of clients in quests` | Player count reported to clients does not match retail behavior |
 
 ### 2. Test gaps on critical paths
 
-**Handler files with no test file:**
+**Handler files with no test file (7 remaining):**
 
-| File | Lines | Priority | Reason |
-|------|-------|----------|--------|
-| `handlers_session.go` | 833 | HIGH | Login/logout, log key, character enumeration |
-| `handlers_gacha.go` | 411 | HIGH | Economy system with DB writes |
-| `handlers_commands.go` | 421 | HIGH | Admin command system |
-| `handlers_data_paper.go` | 621 | MEDIUM | Daily paper data |
-| `handlers_plate.go` | 294 | MEDIUM | Armor plate system |
-| `handlers_shop.go` | 291 | MEDIUM | Shopping system |
-| `handlers_seibattle.go` | 259 | MEDIUM | Sei battle system |
-| `handlers_scenario.go` | ~100 | LOW | Mostly complete, uses repo |
-| `handlers_distitem.go` | small | LOW | Distribution items |
-| `handlers_guild_mission.go` | small | LOW | Guild missions |
-| `handlers_kouryou.go` | small | LOW | Kouryou system |
+| File | Priority | Reason |
+|------|----------|--------|
+| `handlers_commands.go` | HIGH | Admin command system |
+| `handlers_data_paper.go` | MEDIUM | Daily paper data |
+| `handlers_seibattle.go` | MEDIUM | Sei battle system |
+| `handlers_scenario.go` | LOW | Mostly complete, uses repo |
+| `handlers_distitem.go` | LOW | Distribution items |
+| `handlers_guild_mission.go` | LOW | Guild missions |
+| `handlers_kouryou.go` | LOW | Kouryou system |
 
 **Repository files with no store-level test file (17 total):**
 
@@ -63,83 +55,57 @@ These TODOs represent features that are visibly broken for players.
 
 These are validated indirectly through mock-based handler tests but have no SQL-level integration tests.
 
-### 3. Sign server has no repository layer
-
-The channelserver was refactored to use repository interfaces (commits `a9cca84`, `6fbd294`, `1d5026c`), but `server/signserver/` was not included. It still does raw `db.QueryRow`/`db.Exec` with **8 silently discarded errors** on write paths:
-
-```
-server/signserver/dbutils.go:86,91,94,100,107,123,149
-server/signserver/session.go
-server/signserver/dsgn_resp.go
-```
-
-Examples of discarded errors (login timestamps, return-to-player expiry, rights queries):
-```go
-_, _ = s.db.Exec("UPDATE users SET return_expires=$1 WHERE id=$2", returnExpiry, uid)
-_ = s.db.QueryRow("SELECT last_character FROM users WHERE id=$1", uid).Scan(&lastPlayed)
-```
-
-A database connectivity issue during login would be invisible.
-
 ---
 
 ## Medium Priority
 
-### 4. Split `repo_guild.go`
-
-At 1004 lines with 71 functions, `repo_guild.go` mixes 6 distinct concerns:
-
-- Guild CRUD and metadata
-- Member management
-- Applications/recruitment
-- RP tracking
-- Item box operations
-- Message board posts
-
-Suggested split: `repo_guild.go` (core CRUD), `repo_guild_members.go`, `repo_guild_items.go`, `repo_guild_board.go`.
-
-### 5. Logging anti-patterns
+### 3. Logging anti-patterns
 
 ~~**a) `fmt.Sprintf` inside structured logger calls (6 sites):**~~ **Fixed.** All 6 sites now use `zap.Uint32`/`zap.Uint8`/`zap.String` structured fields instead of `fmt.Sprintf`.
 
 ~~**b) 20+ silently discarded SJIS encoding errors in packet parsing:**~~ **Fixed.** All call sites now use `SJISToUTF8Lossy()` which logs decode errors at `slog.Debug` level.
 
-### ~~6. Inconsistent transaction API~~ (Fixed)
+### 4. Typos and stale comments
 
-**Status:** Fixed. All transaction call sites now use `BeginTxx(context.Background(), nil)` with deferred rollback, replacing the old `Begin()` + manual rollback pattern across `repo_guild.go`, `repo_guild_rp.go`, `repo_festa.go`, and `repo_event.go`.
-
-### ~~7. `LoopDelay` config has no Viper default~~ (Fixed)
-
-**Status:** Fixed. `viper.SetDefault("LoopDelay", 50)` added in `config/config.go`, matching the `config.example.json` value.
+| Location | Issue |
+|----------|-------|
+| `sys_session.go:73` | Comment says "For Debuging" — typo ("Debugging"), and the field is used in production logging, not just debugging |
+| `handlers_session.go:394` | "offical" should be "official" |
+| `handlers_session.go:322` | `if s.server.db != nil` guard wraps repo calls — leaky abstraction from the pre-repository refactor |
 
 ---
 
 ## Low Priority
 
-### 8. Typos and stale comments
+### 5. CI updates
 
-| Location | Issue |
-|----------|-------|
-| `sys_session.go:73` | Comment says "For Debuging" — typo, and the field is used in production logging, not just debugging |
-| `handlers_session.go:397` | "offical" should be "official" |
-| `handlers_session.go:324` | `if s.server.db != nil` guard wraps repo calls that are already nil-safe — refactoring artifact |
-
-### 9. CI updates
-
-- `codecov-action@v3` could be updated to `v4` (current stable)
+- `codecov-action@v4` could be updated to `v5` (current stable)
 - No coverage threshold is enforced — coverage is uploaded but regressions aren't caught
 
 ---
 
+## Completed Items
+
+Items resolved since the original audit:
+
+| # | Item | Resolution |
+|---|------|------------|
+| ~~3~~ | **Sign server has no repository layer** | Fully refactored with `repo_interfaces.go`, `repo_user.go`, `repo_session.go`, `repo_character.go`, and mock tests. All 8 previously-discarded error paths are now handled. |
+| ~~4~~ | **Split `repo_guild.go`** | Split from 1004 lines into domain-focused files: `repo_guild.go` (466 lines, core CRUD), `repo_guild_posts.go`, `repo_guild_alliance.go`, `repo_guild_adventure.go`, `repo_guild_hunt.go`, `repo_guild_cooking.go`, `repo_guild_rp.go`. |
+| ~~6~~ | **Inconsistent transaction API** | All call sites now use `BeginTxx(context.Background(), nil)` with deferred rollback. |
+| ~~7~~ | **`LoopDelay` config has no Viper default** | `viper.SetDefault("LoopDelay", 50)` added in `config/config.go`. |
+| — | **Monthly guild item claim** (`handlers_guild.go:389`) | Now tracks per-character per-type monthly claims via `stamps` table. |
+| — | **Handler test coverage (4 files)** | Tests added for `handlers_session.go`, `handlers_gacha.go`, `handlers_plate.go`, `handlers_shop.go`. |
+| — | **Entrance server raw SQL** | Refactored to repository interfaces (`repo_interfaces.go`, `repo_session.go`, `repo_server.go`). |
+
+---
+
 ## Suggested Execution Order
 
-Based on impact and the momentum from recent repo-interface refactoring:
+Based on remaining impact:
 
-1. **Add tests for `handlers_session.go` and `handlers_gacha.go`** — highest-risk untested code on the critical login and economy paths
-2. **Refactor signserver to use repository interfaces** — completes the pattern established in channelserver and surfaces 8 hidden error paths
-3. ~~**Fix monthly guild item claim**~~ (`handlers_guild.go:389`) — **Done**
-4. **Split `repo_guild.go`** — last oversized file after the recent refactoring push
-5. ~~**Fix `fmt.Sprintf` in logger calls**~~ — **Done**
-6. ~~**Add `LoopDelay` Viper default**~~ — **Done**
-7. ~~**Log SJIS decoding errors**~~ — **Done**
-8. ~~**Standardize on `BeginTxx`**~~ — **Done**
+1. **Add tests for `handlers_commands.go`** — highest-risk remaining untested handler (admin commands)
+2. **Fix bookshelf data pointer** (`model_character.go`) — corrupts saves for three game versions
+3. **Implement guild daily RP rollover** (`handlers_guild_ops.go:148`) — missing game feature
+4. **Fix typos** (`sys_session.go:73`, `handlers_session.go:394`) — quick cleanup
+5. **Update `codecov-action` to v5** and add coverage threshold — prevents regressions
diff --git a/server/channelserver/handlers_session.go b/server/channelserver/handlers_session.go
index 3919a244f..4c6571879 100644
--- a/server/channelserver/handlers_session.go
+++ b/server/channelserver/handlers_session.go
@@ -391,7 +391,7 @@ func handleMsgSysIssueLogkey(s *Session, p mhfpacket.MHFPacket) {
 		return
 	}
 
-	// TODO(Andoryuuta): In the offical client, the log key index is off by one,
+	// TODO(Andoryuuta): In the official client, the log key index is off by one,
 	// cutting off the last byte in _most uses_. Find and document these accordingly.
 	s.Lock()
 	s.logKey = logKey
diff --git a/server/channelserver/sys_session.go b/server/channelserver/sys_session.go
index 0232936d1..6b75d3aa5 100644
--- a/server/channelserver/sys_session.go
+++ b/server/channelserver/sys_session.go
@@ -70,7 +70,6 @@ type Session struct {
 	// Contains the mail list that maps accumulated indexes to mail IDs
 	mailList []int
 
-	// For Debuging
 	Name     string
 	closed   atomic.Bool
 	ackStart map[uint32]time.Time