docs: point to ~/agent-secret-vault (unified home, ~/projects copy removed)

docs/human-guide.md

@@ -62,7 +62,7 @@ installer 會先檢查：
 維護者若要讓其他 agent / 機器安裝，先在已可解密的機器上執行：
 
 ```bash
-cd ~/projects/agent-secret-vault
+cd ~/agent-secret-vault
 ./scripts/create-vault-pass-archive.sh
 git add secrets/vault-pass.txt.zip
 git commit -m "Add vault password archive"
@@ -76,7 +76,7 @@ git push
 安裝流程要求先填 repo 內的 env 檔：
 
 ```bash
-cd ~/projects/agent-secret-vault
+cd ~/agent-secret-vault
 cp -n install.env.example install.env
 editor install.env
 ./scripts/install-vault-pass.sh --check-env
@@ -121,14 +121,14 @@ VAULT_PASS_ZIP_PASSWORD_FILE=/secure/path/zip-password.txt \
 ### 查看 vault
 
 ```bash
-cd ~/projects/agent-secret-vault
+cd ~/agent-secret-vault
 ./scripts/vault.sh view
 ```
 
 ### 編輯 vault
 
 ```bash
-cd ~/projects/agent-secret-vault
+cd ~/agent-secret-vault
 git pull --ff-only
 ./scripts/vault.sh edit
 git add secrets/vault.yml