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# TeaQL safe SQL execution evidence (Python)

Collect provider-native parameterized SQL only on a trusted server-created
`UserContext`. Convert trusted log entries to this bounded shape before exposing
diagnostics to an application or Coding Agent.

```python
from dataclasses import dataclass
from typing import Optional, Sequence

from teaql.runtime import SqlLogEntry, SqlLogOperation


@dataclass(frozen=True)
class SafeSQLExecutionEvidence:
    operation: SqlLogOperation
    parameterized_sql: str
    parameter_count: int
    elapsed_micros: int
    result_count: Optional[int]
    affected_rows: Optional[int]
    result_summary: str


def safe_sql_evidence(entries: Sequence[SqlLogEntry]) -> list[SafeSQLExecutionEvidence]:
    return [
        SafeSQLExecutionEvidence(
            operation=entry.operation,
            parameterized_sql=entry.sql,
            parameter_count=len(entry.params),
            elapsed_micros=int(entry.elapsed.total_seconds() * 1_000_000),
            result_count=entry.result_count,
            affected_rows=entry.affected_rows,
            result_summary=entry.result_summary,
        )
        for entry in entries
    ]
```

Use `enable_all_sql_log()`, `enable_select_sql_log()`,
`enable_mutation_sql_log()`, or `disable_sql_log()` on the trusted context.
Every mode change clears previous entries. Raw `params`, interpolated
`debug_sql`, credentials, and connection strings stay inside the trusted
boundary and are intentionally absent from the safe projection.

Query and mutation logs and `TextDiagnosticSqlLogSink` are enabled on a new
context. Replace it, when needed, with
`context.with_diagnostic_sql_log_sink(TextDiagnosticSqlLogSink())`. Use
`disable_select_sql_log()` and
`disable_mutation_sql_log()` independently; use `disable_sql_log()` only to
silence both. Each entry retains structured `comment`, `purpose`,
`audit_reason`, typed multi-level `trace_path`, parameterized SQL, copy-paste
`debug_sql`, elapsed time, result count, and affected rows. Rendered SQL can
contain secrets and personal data and must remain operator-only output.

---

## TeaQL seven-language assist contract

Apply the verified Rust semantic ceiling while using only the exact PYTHON generated and
runtime APIs. Discover APIs through the generated application AGENTS.md and progressive
model-aware Assist. Do not inspect generated domain-library source.

- Do not create plurals by appending `s` or `es`; use the centralized generated plural.
- Human and non-human entities use different generated predicate vocabularies. Preserve
  forms such as “who are active” and “whose email is”; never infer them from English.
- Configure filters, projection, paging, and other query options before `purpose(...)`.
  Comment may appear anywhere in the chain. Purpose enters the executable stage; execution
  requires both values, but comment does not have to immediately precede purpose.
- Every execute/list/stream and every save accepts exactly one context argument:
  `UserContext`. Name that argument `context`, never `runtime`; data services and global
  policy are injected when the context is built. Reserve `runtime` for process-level
  runtime ownership, provider/pool setup, and module assembly.
- Tenant, merchant, identity, permissions, request policy, purpose policy, hard limit,
  and continuous-page cursor policy come only from trusted context, never dynamic JSON or TFP.
- If the required operation is absent after current entity/action and required field
  Assist, stop that path and report MISSING_ASSIST. Do not guess an API or search the
  generated library as a fallback.
- Create each application-owned source file once. After its first compile attempt,
  repair only the smallest block identified by the exact compiler or test diagnostic.
  Preserve unrelated code; do not rewrite the complete file as an error-recovery loop.
- Before a repair that would replace more than 25% of an existing application file,
  stop and report LARGE_REWRITE_REQUEST with the file, exact diagnostic, reason, and
  estimated scope. Initial creation and model-driven regeneration are not repairs.

Capability: `debug`.

- Capture purpose, comment, trace/correlation id, parameterized SQL summary,
  duration, row count, provider, and the runtime's native response when available.
- Preserve the immutable row audit event and the customizable App Audit Sink as
  separate paths. Redact credentials, tokens, connection strings, and customer data.
- Document only switches and hooks present in the selected runtime source.
