Stage 4: TOML integrations — gemini and tabnine migrated to plugin architecture

[mnriem]

Summary

Migrate the two TOML-format integrations (Gemini CLI and Tabnine CLI) to the plugin architecture, completing Stage 4 of the integration migration plan (#1924).

Changes

TomlIntegration base class (integrations/base.py)

Mirrors MarkdownIntegration closely — subclasses only need to set key, config, registrar_config, and optionally context_file:

• Overrides command_filename() → .toml extension
• Extracts description from YAML frontmatter for the top-level TOML key
• Renders prompt body in TOML multiline basic strings (""") with escaped backslashes
• Keeps full processed template (including frontmatter) as the prompt body
• Byte-for-byte parity with v0.4.4 release ZIP output

Integration subpackages

• integrations/gemini/ — GeminiIntegration(TomlIntegration) with update-context scripts
• integrations/tabnine/ — TabnineIntegration(TomlIntegration) with update-context scripts

Both are config-only (~20 lines each), registered in INTEGRATION_REGISTRY.

Tests

• TomlIntegrationTests mixin in test_integration_base_toml.py with TOML-specific validations:
  • Valid TOML parsing (via tomllib), description/prompt keys, {{args}} placeholder
  • Setup/teardown, manifest tracking, install/uninstall round-trips
  • CLI auto-promote (--ai) and --integration flag tests
  • Complete file inventory tests (sh + ps)
• test_integration_gemini.py and test_integration_tabnine.py — config-only test classes

Validation

• 1419 tests pass (46 new)
• All 21 agents × 2 script variants byte-for-byte identical with v0.4.4 release ZIPs

Relates to

#1924

[Copilot]

Pull request overview

This PR migrates the Gemini CLI and Tabnine CLI integrations (TOML command format) onto the new integration plugin architecture by introducing a TomlIntegration base class, wiring both integrations into the registry, and adding comprehensive TOML-specific integration tests.

Changes:

• Added TomlIntegration to generate TOML command files (extract frontmatter description, render prompt as TOML multiline strings, install scripts).
• Added new built-in integrations: GeminiIntegration and TabnineIntegration, including per-integration update-context wrapper scripts (sh/ps1).
• Added a reusable TOML integration test mixin plus per-integration config-only test classes and inventory/round-trip validations.

Reviewed changes

Copilot reviewed 11 out of 11 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
src/specify_cli/integrations/base.py	Introduces TomlIntegration and TOML rendering/installation logic mirroring MarkdownIntegration.
src/specify_cli/integrations/__init__.py	Registers Gemini + Tabnine as built-in integrations.
src/specify_cli/integrations/gemini/__init__.py	Adds GeminiIntegration(TomlIntegration) configuration.
src/specify_cli/integrations/gemini/scripts/update-context.sh	Adds Gemini wrapper delegating to shared update-agent-context.sh.
src/specify_cli/integrations/gemini/scripts/update-context.ps1	Adds Gemini wrapper delegating to shared update-agent-context.ps1.
src/specify_cli/integrations/tabnine/__init__.py	Adds TabnineIntegration(TomlIntegration) configuration.
src/specify_cli/integrations/tabnine/scripts/update-context.sh	Adds Tabnine wrapper delegating to shared update-agent-context.sh.
src/specify_cli/integrations/tabnine/scripts/update-context.ps1	Adds Tabnine wrapper delegating to shared update-agent-context.ps1.
tests/integrations/test_integration_base_toml.py	Adds TOML integration test mixin (parsing, manifest tracking, install/uninstall, CLI flows, file inventory).
tests/integrations/test_integration_gemini.py	Adds config-only test class for Gemini based on TOML mixin.
tests/integrations/test_integration_tabnine.py	Adds config-only test class for Tabnine based on TOML mixin.

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