@ataraxy-labs/sem - npm Package Compare versions

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0.18.0

0.19.0

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CHANGELOG.md

		@@ -7,2 +7,22 @@ # Changelog

		## [0.19.0] - 2026-07-05

		### Removed

		- Removed `sem orient` and all fuzzy/ranked retrieval. The `orient` command and its `--pack` briefing, the sem-core ranking (lexical scoring, IDF, recall net, structural priming), the `sem_entities query=` intent-search mode, and the resident server's `orient` socket op are all gone. Ranking a natural-language task to the right entity proved unreliable — a 45-task validation showed the ranker's hit-rate (~47%) could not be lifted by heuristics without causing regressions — and it was the only non-deterministic thing in sem. sem is now purely deterministic: `context` (read an entity plus its callers/callees), `impact` (blast radius), `diff`, `entities` (list by path, or `text=` for exact-substring search), `blame`, `log`. To find code whose name you don't know, use a plain text search to get a candidate name, then hand it to `sem context` for the structure grep can't give. The prompt-submit hook keeps its deterministic exact-name prefetch and no longer shells out to the ranker.

		### Fixed

		- Dot-chain extraction is now linear, not quadratic, in file size. `extract_dot_chains_with_positions` computed each match's line number by counting newlines from the start of the file every time, so on a large file dense with `a.b` chains the cost was O(matches times filelen). Since the regex yields matches in increasing byte order, it now tracks the line number incrementally and counts only the newlines since the previous match, which is linear overall and produces identical one-based line numbers. Verified byte-for-byte identical graph output on React (34,251 entities, 73,702 edges). No change for typical files; it removes a cliff on very large generated or minified sources.

		- Structural hashing no longer allocates a Vec per AST node. The two structural-hash walkers (`hash_structural_tokens` and its name-excluding variant) collected every internal node's children into a fresh heap `Vec` (plus a fresh tree-sitter cursor) just to push them in reverse, despite a comment claiming zero allocations. They now reuse a single cursor and push children in place, reversing the appended slice, which is byte-for-byte identical output. On a cold graph build this removes roughly 300k allocations (structural hashing alone dropped from about 319k allocations to 13.5k, measured with dhat on deno). Peak RSS is unchanged and wall time is within noise under mimalloc, but the churn reduction helps memory-constrained and non-mimalloc builds. Hashes are verified identical across 3,337 entities, so rename detection and existing caches are unaffected.

		### Added

		- `sem setup` now makes sem a Claude Code session default (macOS/Linux). Beyond the `git diff` alias, it installs two session hooks into `~/.claude/settings.json`: a warm resident graph (SessionStart runs `sem mcp --resident` detached, so structural queries answer in single-digit ms instead of rebuilding) and prompt-time context injection (`sem hook prompt-submit`). The JSON edit is idempotent, backs up `settings.json` first, refuses to touch a file it can't parse, and preserves every existing user hook and key; `sem unsetup` removes exactly the sem hooks and cleans up empty arrays. Local warmth is free and login-free — cloud (`sem login`) is repositioned in the README as the scale/team/CI upgrade, not the way to get warmth.

		### Documentation

		- Benchmarks page rebuilt on the July 2026 paired-run data. The docs site's benchmarks page now reports the real agent A/B numbers (grep+read agent vs sem agent on SWE-bench Verified bugs, hidden-test graded): 50-65% faster code understanding, verify loop 2.90s to 0.59s per iteration when call-graph edges resolve (bimodal, 1.2x floor disclosed), token parity stated plainly, and an explicit "what sem does not do" section including the unchanged solve rate. Retired the stale "75% fewer tokens" and "2.3x agent accuracy" hero claims. Changelog page gains entries for v0.17-v0.18 work with the lessons that produced them.

		## [0.18.0] - 2026-07-03
		@@ -9,0 +29,0 @@

+1

-1

package.json

		{
		"name": "@ataraxy-labs/sem",
		"mcpName": "io.github.Ataraxy-Labs/sem",
		"version": "0.18.0",
		"version": "0.19.0",
		"description": "npm wrapper for the sem CLI. Downloads the matching release binary and exposes the sem command in node_modules/.bin.",
		@@ -6,0 +6,0 @@ "license": "MIT OR Apache-2.0",

+6

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README.md

		@@ -273,4 +273,6 @@ > Part of the [Ataraxy Labs](https://ataraxy-labs.com) stack — agent-native infrastructure for software development. See also: [weave](https://ataraxy-labs.com/weave) (entity-level git merge driver) · [inspect](https://github.com/Ataraxy-Labs/inspect) (semantic code review) · [opensessions](https://github.com/Ataraxy-Labs/opensessions) (tmux sidebar for coding agents).

		To disable and go back to normal git diff:
		On macOS and Linux, `sem setup` also wires sem into your Claude Code sessions (free, local, no login): a warm resident graph so structural queries answer in single-digit milliseconds instead of rebuilding each time, and prompt-time context so the code an agent would otherwise forage for arrives at the start of the turn. It edits `~/.claude/settings.json` idempotently, backs it up first, and leaves any hooks you already have untouched.

		To disable and go back to normal git diff (also removes the session hooks):

		```bash
		@@ -303,7 +305,7 @@ sem unsetup

		## Cloud acceleration (optional)
		## Cloud acceleration (for scale and teams)

		sem builds an entity dependency graph to answer `impact`, `context`, and `entities`. On a small or medium repo that's instant. On a very large codebase, building the graph locally can take hundreds of milliseconds to a few seconds.
		Local is always free and, after `sem setup`, always warm — the resident graph keeps your repo hot on your own machine, so day-to-day queries are instant with no login. You do not pay to make your laptop fast.

		`sem login` connects sem to sem cloud, which keeps a warm, pre-built graph for your registered repos. When you're logged in, those queries are served from the warm cache instead of rebuilt locally, so they stay fast no matter how big the repo gets.
		Cloud is for what a laptop can't do. On a very large monorepo the first local graph build can take a few seconds; a shared team graph shouldn't be rebuilt per developer; and CI wants the graph without checking anything out. `sem login` connects those cases to sem cloud, which keeps a warm, pre-built graph for your registered repos and serves the heavy queries from it (on a large repo like deno, an `impact` query is ~86ms from the cloud vs ~573ms rebuilt locally).

		@@ -310,0 +312,0 @@ ```bash

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