Function assemble_code_mode_prompt 

pub async fn assemble_code_mode_prompt(
    connector: &(dyn SqlConnector + '_),
    config: &ServerConfig,
) -> Result<String>

TKIT-10: assemble the code-mode bootstrap prompt body from a connector’s SqlConnector::schema_text + curated [[database.tables]] descriptions.

Per Phase 83 review R2 (BOTH reviewers HIGH severity), this function calls ONLY SqlConnector::schema_text — never execute(), which is deferred to Phase 84. Dialect-aware placeholder GUIDANCE is included even though translate_placeholders is deferred, because the LLM still benefits from knowing the eventual binding shape.

Output structure

# Code Mode — {dialect.name()}

{dialect.placeholder_guidance()}

## Schema

{connector.schema_text()}

## Curated Tables

- `table_a`: description A
- `table_b`: description B

The “Curated Tables” section is omitted entirely when config.database.tables is empty OR every entry has no description. Entries with description = None are skipped individually.

Errors

Returns ToolkitError::CodeMode if connector.schema_text() fails. The toolkit does not retry; callers should ensure the connector is ready before assembling.

Example

use pmcp_server_toolkit::code_mode::assemble_code_mode_prompt;
use pmcp_server_toolkit::config::ServerConfig;
use pmcp_server_toolkit::sql::SqlConnector;

async fn assemble<C: SqlConnector>(connector: &C, config: &ServerConfig) {
    let prompt = assemble_code_mode_prompt(connector, config).await.unwrap();
    assert!(prompt.contains("# Code Mode"));
}