* docs: add context optimization design spec, implementation plan, and pi-layer research
- Spec: 6-change design for GSD extension context optimization
- Plan: 9-task TDD implementation plan with exact file paths and code
- Pi-layer doc: 10 infrastructure opportunities (research only, not planned)
Part of #3171, #3406, #3452, #3433.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
* feat(context): add observation masking for auto-mode sessions
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
* feat(context): add phase handoff anchors for auto-mode
Introduces PhaseAnchor read/write utilities so downstream agents can
inherit decisions, blockers, and intent written at phase boundaries
without re-inferring from conversation history.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
* feat(context): add capability-aware model routing and context management preferences
Implement ADR-004 Phase 2 capability scoring with 7-dimension model
profiles, task requirement vectors, and weighted scoring. Add
ContextManagementConfig preferences for observation masking thresholds.
Wire capability scoring into auto-model-selection dispatch path.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
* feat(context): wire observation masking, phase anchors, and tool truncation
Register observation masker in before_provider_request hook to replace
old tool results with placeholders during auto-mode. Add tool result
truncation (configurable via context_management.tool_result_max_chars).
Inject phase handoff anchors into prompt builders so downstream phases
inherit decisions from research/planning. Write anchors after successful
phase completion. Update ADR-004 status to Implemented.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
* chore: remove internal planning artifacts from PR
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
* docs: add capability routing, observation masking, and context management
Update dynamic-model-routing.md with capability-aware scoring section.
Update token-optimization.md with observation masking, tool truncation,
and phase handoff anchor documentation. Update configuration.md with
context_management preference block and capability_routing flag.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
* Merge branch 'main' into feat/gsd-context-optimization
* fix: add context_management to known keys and prevent tool truncation state corruption
- Add missing 'context_management' to KNOWN_PREFERENCE_KEYS set so users
don't get spurious unknown-key warnings when configuring it.
- Replace in-place mutation of tool result content with immutable spread
to prevent corrupting shared conversation message objects.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
* fix: add stop and backtrack to triage-ui classification labels
The Classification type gained stop and backtrack variants from main
but triage-ui.ts was not updated, causing a TypeScript build failure.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
* fix: context masker and tool truncation operate on correct pi-ai message format
The observation masker and tool result truncation in before_provider_request
were checking m.type === "toolResult" but the actual pi-ai payload uses
m.role === "toolResult" with content as TextContent[] arrays (not strings).
bashExecution messages are converted to {role:"user"} by convertToLlm before
the hook fires, so checking m.type === "bashExecution" was a no-op.
- Fix context-masker to match on role, handle array content, detect bash
results by their "Ran `" prefix
- Fix register-hooks truncation to operate on role:"toolResult" with
array content blocks
- Update tests to use correct pi-ai LLM payload format
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
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Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>
Tom Boucher