Add JGD2011 vertical compound CRS to srs.sql

[NEKOYASAN]

Close #753

What I did

• add JGD2011 + JGD2011 (vertical) height to srs.sql

Notes

[Copilot]

Pull Request Overview

This PR adds support for the JGD2011 + JGD2011 (vertical) height compound coordinate reference system (EPSG:6697) and performs minor code formatting cleanup.

• Added JGD2011 + JGD2011 (vertical) height (EPSG:6697) spatial reference system to the GeoPackage initialization
• Reformatted a query string from multi-line to single-line format for consistency

Reviewed Changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated no comments.

File	Description
nusamai-gpkg/src/sql/srs.sql	Added INSERT statement for JGD2011 compound CRS (EPSG:6697) with proper WKT definition
nusamai-gpkg/src/handler.rs	Reformatted query string to single line for consistency

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[sentry]

Bug: sqlx::query() executes only the first statement from srs.sql, preventing subsequent INSERTs, including new CRS entries, from being applied.
_{Severity: CRITICAL | Confidence: 1.00}

🔍 Detailed Analysis

The srs.sql file contains multiple INSERT statements, but sqlx::query() is used to execute it. sqlx::query() is designed to execute only a single SQL statement. As a result, only the first INSERT statement will be executed, and subsequent statements, including the new JGD2011 entry (SRID 6697) and other existing CRS definitions, will not be inserted into the gpkg_spatial_ref_sys table. The database initialization will appear to succeed without error, but the new CRS will be unavailable for use.

💡 Suggested Fix

Use sqlx::raw_sql() for the multi-statement script, or split srs.sql into individual statements and execute them within a transaction, or use separate execute() calls for each statement.

🤖 Prompt for AI Agent

Review the code at the location below. A potential bug has been identified by an AI
agent.
Verify if this is a real issue. If it is, propose a fix; if not, explain why it's not
valid.

Location: nusamai-gpkg/src/sql/srs.sql#L57-L74

Potential issue: The `srs.sql` file contains multiple `INSERT` statements, but
`sqlx::query()` is used to execute it. `sqlx::query()` is designed to execute only a
single SQL statement. As a result, only the first `INSERT` statement will be executed,
and subsequent statements, including the new JGD2011 entry (SRID 6697) and other
existing CRS definitions, will not be inserted into the `gpkg_spatial_ref_sys` table.
The database initialization will appear to succeed without error, but the new CRS will
be unavailable for use.

_{Did we get this right? 👍 / 👎 to inform future reviews.}

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.

Additional details and impacted files

Components	Coverage Δ
GUI	33.33% <ø> (ø)
Backend	78.94% <ø> (-0.04%)	⬇️
Libraries	83.48% <100.00%> (-0.01%)	⬇️

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