feat(ui,api): strip board redesign - island, rail by day, context view, server search, vault graph

tests/test_context.py

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+import tempfile
+from pathlib import Path
+
+from beaver_gateway.agents.claude import ClaudeAgent, Prompts
+from beaver_gateway.conversations.context import compose, files_touched, granules
+from beaver_gateway.vault.links import LinkIndex
+
+
+def entry(name: str, tool_input: dict, stamp: str = "2026-09-02T10:00:00Z") -> dict:
+    return {
+        "type": "assistant",
+        "timestamp": stamp,
+        "message": {
+            "content": [{"type": "tool_use", "name": name, "input": tool_input}]
+        },
+    }
+
+
+def test_files_touched_groups_by_path_relative_to_cwd() -> None:
+    cwd = Path("/vault")
+    files, counts = files_touched(
+        [
+            entry("Read", {"file_path": "/vault/a.md"}, "2026-09-02T10:00:00Z"),
+            entry("Edit", {"file_path": "/vault/a.md"}, "2026-09-02T10:05:00Z"),
+            entry("Grep", {"pattern": "x", "path": "/vault"}),
+            entry("Bash", {"command": "ls"}),
+            entry("Read", {"file_path": "/elsewhere/b.md"}, "2026-09-02T09:00:00Z"),
+        ],
+        cwd=cwd,
+    )
+    assert [f["path"] for f in files] == ["a.md", "/elsewhere/b.md"]
+    assert files[0] == {
+        "path": "a.md",
+        "reads": 1,
+        "writes": 1,
+        "other": 0,
+        "last_at": "2026-09-02T10:05:00Z",
+    }
+    assert counts == {"Read": 2, "Edit": 1, "Grep": 1, "Bash": 1}
+
+
+def test_compose_reads_granules_and_skills() -> None:
+    root = Path(tempfile.mkdtemp(prefix="beaver-ctx-"))
+    (root / "voice.md").write_text("be brief " * 40)
+    (root / "env.md").write_text("you are in the master thread")
+    skills = root / "skills" / "common"
+    (skills / "ops").mkdir(parents=True)
+    (skills / "ops" / "SKILL.md").write_text(
+        "---\nname: ops\ndescription: servers\n---\n"
+    )
+    agent = ClaudeAgent(
+        name="a",
+        model="m",
+        cwd=root,
+        prompts=Prompts(master=(("voice", root / "voice.md"), root / "env.md")),
+        skill_sets=(skills,),
+        gateway_tools=("say",),
+    )
+    out = compose(
+        agent,
+        "master",
+        [entry("Read", {"file_path": str(root / "env.md")})],
+        context_tokens=50_000,
+    )
+    assert [g["path"] for g in out["prompt"]["granules"]] == ["voice.md", "env.md"]
+    assert out["prompt"]["granules"][0]["tag"] == "voice"
+    assert out["prompt"]["tokens_est"] > 0
+    assert out["skills"] == [
+        {
+            "set": "common",
+            "path": "skills/common",
+            "skills": [
+                {"name": "ops", "description": "servers", "path": "skills/common/ops"}
+            ],
+        }
+    ]
+    assert out["tools"]["gateway"] == ["say"]
+    assert out["files"][0]["path"] == "env.md"
+    assert out["history_tokens_est"] < 50_000
+    assert granules(agent, "deep")["granules"] == []
+
+
+def test_link_index_resolves_stems_and_neighbours() -> None:
+    root = Path(tempfile.mkdtemp(prefix="beaver-links-"))
+    (root / "people").mkdir()
+    (root / "people" / "Marta.md").write_text("works at [[Studio]] with [[Ilya|him]]")
+    (root / "Studio.md").write_text("see [[people/Marta]] and [[nowhere]]")
+    (root / "Ilya.md").write_text("plain")
+    (root / ".obsidian").mkdir()
+    (root / ".obsidian" / "x.md").write_text("[[Studio]]")
+    index = LinkIndex(root)
+    graph = index.neighbours([str(root / "people" / "Marta.md")])
+    nodes = {n["path"]: n for n in graph["nodes"]}
+    assert nodes["people/Marta.md"]["touched"] is True
+    assert set(nodes) == {"people/Marta.md", "Studio.md", "Ilya.md"}
+    assert {(e["from"], e["to"]) for e in graph["edges"]} == {
+        ("people/Marta.md", "Studio.md"),
+        ("people/Marta.md", "Ilya.md"),
+        ("Studio.md", "people/Marta.md"),
+    }
+    missing = index.neighbours(["gone.md"])
+    assert missing["nodes"] == [
+        {"path": "gone.md", "title": "gone", "touched": True, "exists": False}
+    ]