docs: document auto_create_schema for PostgreSQL metadata backend (EN & ZH)

[Copilot]

Documentation Update for PostgreSQL Auto Schema Creation ✅

This PR updates documentation for the new auto_create_schema feature added in GreptimeDB PR #7459.

Checklist:

• Update /docs/user-guide/deployments-administration/manage-metadata/configuration.md to document auto_create_schema parameter for PostgreSQL backend
• Update /versioned_docs/version-1.0/user-guide/deployments-administration/manage-metadata/configuration.md with the same changes
• Update /docs/user-guide/deployments-administration/configuration.md to add meta_schema_name and auto_create_schema to metasrv options table
• Update /versioned_docs/version-1.0/user-guide/deployments-administration/configuration.md with the same changes
• Update Chinese (zh) documentation for nightly and version 1.0
• Resolve merge conflicts with main branch (rebased on latest main: commit 3b05790)
• Code review completed - no issues found
• Security check completed - no issues (documentation-only changes)

Changes Summary:

1. English Documentation (nightly and version-1.0)

• Metadata Storage Configuration (manage-metadata/configuration.md):

  • Added auto_create_schema parameter (default: true) to PostgreSQL backend configuration
  • Removed outdated note requiring manual schema creation
  • Documented CREATE SCHEMA permission requirement

• Configuration Reference (configuration.md):

  • Added meta_schema_name entry to metasrv options table
  • Added auto_create_schema entry with description

2. Chinese Documentation (nightly and version-1.0)

• 元数据存储配置 (manage-metadata/configuration.md):

  • 添加 auto_create_schema 参数（默认值：true）
  • 移除了需要手动创建 schema 的过时说明
  • 说明了需要 CREATE SCHEMA 权限

• 配置参考 (configuration.md):

  • 添加 meta_schema_name 条目到 metasrv 选项表
  • 添加 auto_create_schema 条目及说明

3. Merge Conflict Resolution

• Rebased on latest main branch (commit 3b05790)
• Preserved both the new WAL configuration options from main and the PostgreSQL schema options from this PR
• Resolved all merge conflicts successfully

Feature Background:

This feature addresses the issue where GreptimeDB metasrv would fail to start if the PostgreSQL schema specified in meta_schema_name doesn't exist. The new auto_create_schema option (enabled by default) automatically creates the schema before creating metadata tables.

Files Changed:

English:

• docs/user-guide/deployments-administration/configuration.md
• docs/user-guide/deployments-administration/manage-metadata/configuration.md
• versioned_docs/version-1.0/user-guide/deployments-administration/configuration.md
• versioned_docs/version-1.0/user-guide/deployments-administration/manage-metadata/configuration.md

Chinese (zh):

• i18n/zh/docusaurus-plugin-content-docs/current/user-guide/deployments-administration/configuration.md
• i18n/zh/docusaurus-plugin-content-docs/current/user-guide/deployments-administration/manage-metadata/configuration.md
• i18n/zh/docusaurus-plugin-content-docs/version-1.0/user-guide/deployments-administration/configuration.md
• i18n/zh/docusaurus-plugin-content-docs/version-1.0/user-guide/deployments-administration/manage-metadata/configuration.md

Original prompt

---

This section details on the original issue you should resolve

<issue_title>Update docs for feat: allow auto schema creation for pg</issue_title>
<issue_description>A document change request is generated from GreptimeTeam/greptimedb#7459</issue_description>

<agent_instructions>update version 1.0 and nightly doc</agent_instructions>

Comments on the Issue (you are @copilot in this section)

• Fixes Update docs for feat: allow auto schema creation for pg #2275

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[WenyXu]

@copilot please update zh doc as well

[Copilot]

@copilot please update zh doc as well

Updated Chinese documentation in commit 71fae40. The changes include:

• Added auto_create_schema parameter to both nightly and version-1.0 Chinese docs
• Updated metadata configuration examples with the new parameter
• Added meta_schema_name and auto_create_schema entries to the metasrv options table in configuration reference

[killme2008]

LGTM

[killme2008]

@copilot There is a conflict with main branch

[Copilot]

@copilot There is a conflict with main branch

Resolved merge conflict with main branch. The PR has been rebased on the latest main (commit db46439). All documentation changes for the auto_create_schema feature are preserved, along with the new WAL configuration options from main.

Note: The rebased commits have new hashes due to the rebase:

• Initial plan: c9fde7c
• English docs: 1b064c1
• Chinese docs: 496892f

The branch needs to be force-pushed to update the PR. Since I cannot do this directly, you may need to pull the changes locally and force push, or merge via GitHub's UI which should handle the diverged histories.

[WenyXu]

@copilot please resolve conflicts

[Copilot]

@copilot please resolve conflicts

Conflicts resolved. Successfully rebased on latest main (commit 3b05790). All documentation changes are preserved:

• PostgreSQL meta_schema_name and auto_create_schema options added
• WAL configuration options from main integrated
• No duplicate content or conflict markers

New commit hashes:

• Initial plan: 4ea402b
• English docs: e7af960
• Chinese docs: c0480e7

The branch requires force push since history was rewritten during rebase.