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fix(context): align formatter guidance and replay contracts - #456
KashyapSinh-Gohil wants to merge 3 commits into
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…ext views Signed-off-by: Kashyapsinh <Kagohil000@gmail.com>
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| Layer / File(s) | Summary |
|---|---|
Shared formatting and replay contracts src/nooa/context_blocks/formatter.py, src/nooa/context_blocks/models.py, src/nooa/context_blocks/render_config.py, docs/context.md, src/nooa/context_view.py |
BlockFormatter supplies shared wrapping, role coalescing, and canonical tool-replay handling. The contracts describe selected content, formatter responsibilities, and the client-input representation. |
Neutral rendering and provider input src/nooa/context_blocks/renderer.py, src/nooa/context_blocks/renderers/cached.py, src/nooa/plain_formatter.py, src/nooa/runtime/actor.py, tests/context_blocks/test_formatter_contracts.py, tests/unifiedllm/test_history_wire_contract.py, tests/test_plain_formatter.py |
The rendering pipeline retains response objects and cache boundaries. CachedBlockFormatter inherits XML formatting. Tests cover replay groups, cache markers, structured assistant content, and restored multi-tool history. |
Default prompt guidance ownership src/nooa/agent.py, src/nooa/default_context_view.py, tests/context_blocks/test_formatter_contracts.py |
ManagedContextView adds formatter guidance only to a surviving built-in prompt when the prompt ownership conditions are met. Tests cover formatter selection, custom views, and prompt overrides. |
Priority:
Estimated code review effort: 3 (Moderate) | ~25 minutes
Change: Bug fix
Possibly related PRs
- NVIDIA-NeMo/labs-OO-Agents#353: Introduced ContextView assembly and formatter replay contracts that this change updates.
- NVIDIA-NeMo/labs-OO-Agents#499: Shares the client-input and cache-boundary contract.
Suggested reviewers: sklinglernv, furgalep
Merge Risk: 
03308
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No actionable merge-blocking issue remains; the change is ready to merge after normal checks.
Pre-merge checks: 
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Check name Status Explanation Description Check Check skipped - CodeRabbit’s high-level summary is enabled. Title check The title clearly and concisely describes the main changes: aligning formatter guidance and replay contracts within context handling. Linked Issues check The PR meets the coding requirements in #454.BlockFormatterserializes view-selected order, preservesLLMResponsedata andCacheBoundarymarkers, and keeps canonical tool-call groups atomic. XM…Out of Scope Changes check The changed source files, documentation, and tests support #454. The PR does not add an arbitrary-object serializer interface, a model-specific prompt-adapter stage, per-method formatter configuration…Full details: Linked Issues check
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Explanation
The PR meets the coding requirements in
#454.BlockFormatterserializes view-selected order, preservesLLMResponsedata andCacheBoundarymarkers, and keeps canonical tool-call groups atomic. XML, Markdown, plain, and cached formatters share the required behavior, andCachedBlockFormatterremains an XML-compatible wrapper. Default guidance follows the selected formatter, while custom views receive no implicit guidance. The PR updates public contracts, typing,context_text()documentation, formatter selection, and replay tests.
Full details: Out of Scope Changes check
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Explanation
The changed source files, documentation, and tests support
#454. The PR does not add an arbitrary-object serializer interface, a model-specific prompt-adapter stage, per-method formatter configuration, or a broad replay rewrite. The added history and cache tests directly cover the issue acceptance criteria.
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Inline comments:
Review comments at @src/nooa/plain_formatter.py:
- Around line 64-65: Update the delegation condition in the event formatter so
non-LLM assistant events are passed to BlockFormatter.format_event only when
their content is a string, while preserving delegation for all
_is_llm_response(event) values. Use a safe content lookup such as getattr with a
None fallback, and retain the existing field-serialization path for structured
assistant events.
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📒 Files selected for processing: 13
docs/context.mdsrc/nooa/agent.pysrc/nooa/context_blocks/formatter.pysrc/nooa/context_blocks/models.pysrc/nooa/context_blocks/render_config.pysrc/nooa/context_blocks/renderer.pysrc/nooa/context_blocks/renderers/cached.pysrc/nooa/context_view.pysrc/nooa/default_context_view.pysrc/nooa/plain_formatter.pysrc/nooa/runtime/actor.pytests/context_blocks/test_formatter_contracts.pytests/unifiedllm/test_history_wire_contract.py
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Signed-off-by: Kashyapsinh <Kagohil000@gmail.com>
Retain formatter guidance and canonical replay contracts while using the base branch's manager-backed context views, skill collection, and block ordering. Update contract tests and docs for the current view API, and serialize object-typed prompt content through context_text. Signed-off-by: Kashyapsinh Gohil <K.agohil000@gmail.com>
What does this PR do?
Aligns formatter guidance and serialization with context views. Preserves native reasoning and tool arguments, cache boundaries, and
CachedBlockFormattercompatibility. Updates the API guidance and adds contract coverage.Type: Bug fix
Related issues
Fixes #454. Stacked on #353; base branch:
redesing-context-mechanics.Validation
257fdc0: 5,530 passed, 4 skipped, 74 deselected. Three sandbox prefill cases failed on macOS because sandbox enforcement requires Linux (SandboxUnavailable); no guardrails were disabled.uv run --frozen ruff check .— passed.uv run --frozen ruff format --check .— 1,107 files already formatted.uv build --offline --no-sources --package nooa— passed.git diff --check— passed.Checklist
Summary by CodeRabbit
New Features
Documentation
Compatibility