feat(agents): add dsh session provider - #139
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Read DeepSeek Harness session logs directly from the harness home (\ or ~/.dsh/sessions), including multi-frame zstd artifacts and packed assistant/chunk rows, mirroring dsh's own deriveMessages() projection: surface events only, injected user-role messages excluded, titles latest-wins with a first-user fallback. Registry entry, TUI badge and color, and the listing/session cache version bumps follow the existing provider pattern. Uses pure-Rust ruzstd (no C toolchain).
dsh configures MCP clients as plugin rows in the harness profile's cordis.patch.yml, not a standalone managed file. mcp_host now returns an error for providers without a managed host entry instead of panicking, and \-p all\ installs only managed hosts.
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Included review availability: Your plan includes up to 3 reviews per rolling hour; 2 remain after this review. 📝 WalkthroughWalkthroughThe change adds Dsh session support for plain and concatenated Zstandard logs. It registers Dsh across provider, cache, MCP, and TUI paths. It adds parsing fixtures and validation tests. ChangesDsh integration
Estimated code review effort: 4 (Complex) | ~45 minutes Merge Risk: ⚪ Minimal · up to The PR adds dsh session browsing and related provider handling; no actionable merge-blocking risk remains at the current head after normal checks and review. Suggested reviewers: Sequence Diagram(s)sequenceDiagram
participant User
participant DshProvider
participant SessionFile
participant SessionParser
User->>DshProvider: request recent Dsh sessions
DshProvider->>SessionFile: discover and read session logs
SessionFile-->>DshProvider: JSONL or Zstandard content
DshProvider->>SessionParser: validate and project events
SessionParser-->>DshProvider: session metadata and blocks
DshProvider-->>User: recent session information
🚥 Pre-merge checks | ✅ 4 | ❌ 1❌ Failed checks (1 warning)
✅ Passed checks (4 passed)
✨ Finishing Touches 💡 2📝 Generate docstrings 💡
🛠️ Fix failing CI checks 💡
🧪 Generate unit tests (beta)
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Ariestar
marked this pull request as ready for review
August 14, 2026 09:31
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Inline comments:
In `@crates/sivtr-core/src/agents/dsh.rs`:
- Around line 273-274: Update both metadata-parser success paths around
meta.fallback_title and the corresponding return near the full parser to require
!header_seen before returning success; reject empty, whitespace-only, and
compressed logs without a complete first frame instead of producing empty
session metadata. Add coverage for empty plain and compressed logs.
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📒 Files selected for processing (11)
crates/sivtr-core/Cargo.tomlcrates/sivtr-core/src/agents/dsh.rscrates/sivtr-core/src/agents/jsonl.rscrates/sivtr-core/src/agents/mod.rscrates/sivtr-core/src/agents/model.rscrates/sivtr-core/src/query/mod.rscrates/sivtr-core/tests/fixtures/dsh/gen_zstd.cjscrates/sivtr-core/tests/fixtures/dsh/session.jsonl.zstdsrc/commands/system/mcp.rssrc/tui/theme.rssrc/tui/workspace/model.rs
Empty or whitespace-only logs (including a .zstd artifact with no complete frame) used to parse as a valid empty session and appear in listings. Both the metadata and full parsers now require the first line to be a `session` header; the error contract is shared in one helper.
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Purpose
Support DeepSeek Harness (
dsh) sessions in sivtr as a new registry-driven agent provider, so dsh work can be browsed, searched, and reused like Claude/Codex/etc.Changes
AgentProvider::Dsh+agents/dsh.rs— reads session logs directly from the harness home ($DSH_HOMEor~/.dsh/sessions):ruzstd, no C toolchain) with torn-tail truncation mirroring dsh's own crash recovery;deriveMessages()projection (surface events only), so packedassistant/chunkrows are skipped without expansion;source.kind == "user"enters the dialogue;SESSION_FORMAT_VERSIONlogs are refused with a clear message;list_recent_log_sessionsinagents/jsonl.rsreuses the stamp-validated listing cache for non-.jsonlartifacts.dshbadge and DeepSeek-blue color.mcpcommand — providers without a managed MCP config file (dsh configures MCP clients ascordis.patch.ymlplugin rows) now fail gracefully instead of panicking;-p allinstalls only managed hosts.Validation
cargo fmt --check,cargo clippy --workspace --all-targets -- -D warnings,cargo test --workspace(539 tests) all pass.~/.dsh/sessions, multi-frame zstd): search, BM25, show, workspace filtering, and injected-message filtering all work.Risks / follow-up
SESSION_FORMAT_VERSION = 0); version-gated parse, future format changes need an adapter pass.~/.dsh/sessions) is discovered; a deployment-customized persistence root is out of scope for now.sivtr mcp installintentionally does not manage dsh (Cordis patch YAML surface); can be added later.Summary by CodeRabbit
New Features
$DSH_HOMEor the default home directory.Bug Fixes