* fix(core): stabilize system prompt refresh and expand git-memory coverage
Only rebuild system prompts on explicit refresh paths so normal turns preserve prefix-cache stability, including git/custom prompt layouts. Add integration coverage for memory filesystem tree structure and recompile/reset system-message updates via message-id retrieval.
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Co-Authored-By: Letta <noreply@letta.com>
* fix(core): recompile system prompt around compaction and stabilize source tests
Force system prompt refresh before/after compaction in LettaAgentV3 so repaired system+memory state is used and persisted across subsequent turns. Update source-system prompt tests to explicitly recompile before raw preview assertions instead of assuming automatic rebuild timing.
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Co-Authored-By: Letta <noreply@letta.com>
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Co-authored-by: Letta <noreply@letta.com>
* fix: update ContextWindowCalculator to parse new system message sections
The context window calculator was using outdated position-based parsing
that only handled 3 sections (base_instructions, memory_blocks, memory_metadata).
The actual system message now includes additional sections that were not
being tracked:
- <memory_filesystem> (git-enabled agents)
- <tool_usage_rules> (when tool rules configured)
- <directories> (when sources attached)
Changes:
- Add _extract_tag_content() helper for proper XML tag extraction
- Rewrite extract_system_components() to return a Dict with all 6 sections
- Update calculate_context_window() to count tokens for new sections
- Add new fields to ContextWindowOverview schema with backward-compatible defaults
- Add unit tests for the extraction logic
* update
* generate
* fix: check attached file in directories section instead of core_memory
Files are rendered inside <directories> tags, not <memory_blocks>.
Update validate_context_window_overview assertions accordingly.
* fix: address review feedback for context window parser
- Fix git-enabled agents regression: capture bare file blocks
(e.g. <system/human.md>) rendered after </memory_filesystem> as
core_memory via new _extract_git_core_memory() method
- Make _extract_top_level_tag robust: scan all occurrences to find
tag outside container, handling nested-first + top-level-later case
- Document system_prompt tag inconsistency in docstring
- Add TODO to base_agent.py extract_dynamic_section linking to
ContextWindowCalculator to flag parallel parser tech debt
- Add tests: git-enabled agent parsing, dual-occurrence tag
extraction, pure text system prompt, git-enabled integration test
* fix(core): handle git memory label prefix collisions in filesystem view
Prevent context window preview crashes when a block label is both a leaf and a prefix (e.g. system/human and system/human/context) by rendering a node as both file and directory. Add regression test.
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Co-Authored-By: Letta <noreply@letta.com>
* fix(core): parse git-backed core memory in context window preview
ContextWindowCalculator.extract_system_components now detects git-backed memory rendering (<memory_filesystem> and <system/...> tags) when <memory_blocks> wrapper is absent, so core_memory is populated in the context preview. Add regression tests.
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Co-Authored-By: Letta <noreply@letta.com>
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Co-authored-by: Letta <noreply@letta.com>
