refactor: apply repository naming contract

Apply the accepted pre-release package, service, type, directory, and role renames as one repository-wide change.

.agents/skills/dsh-find-simplifications/SKILL.md

@@ -23,7 +23,7 @@ A strong simplification removes, folds, or demotes something real and has clear
 - Two representations mirror the same fact, especially across durable session events and transient `agent/*` events.
 - A seam has methods every implementation must support but no consumer uses.
 - A separate package exists only for test/demo/support code and adds publish or dependency overhead.
-- A feature implements speculative product generality: multi-session/session-load, background task rosters, live registry invalidation, mid-turn steering, tool-owned UI rendering, and similar designs with no product owner.
+- A feature implements speculative product generality: multi-session/session-load, background job rosters, live registry invalidation, mid-turn steering, tool-owned UI rendering, and similar designs with no product owner.
 - An invariant, rollback path, set of expected outputs, or special-case test exists only to protect an unused API.
 - Hand-rolled code reimplements what a well-maintained external package or a Node builtin at the engine floor already provides, and the swap would delete the implementation plus its dedicated tests ([dependency policy](../../notes/implemented/process/2026-07-26-dependencies-over-hand-rolling.md)).
 - The simplified behavior may differ slightly, but the new behavior is still reasonable and easier to explain.
@@ -37,7 +37,7 @@ Use parallel subagents when the user asks for breadth or many candidates. Give e
 - Agent loop and session log: turn/step boundaries, steering, abort/cancel, durable events, replay, load/resume.
 - ACP automation and human UI APIs: prompt settlement and teardown on the protocol side; transcript rendering and interaction state on the UI side.
 - LLM/tools/system prompt: stream/generate APIs, assemblers, registries, tool schema defaults, presentation hooks.
-- Bash and tool execution: foreground/background split, task ownership, output spill files, executor methods.
+- Bash and tool execution: foreground/background split, job ownership, output spill files, executor methods.
 - Packages/examples/scripts/tests: package splits, static inventories, redundant snapshot expected outputs, support packages.
 
 If subagents are unavailable, simulate the same breadth yourself. Do not let the first good candidate stop the survey.

.agents/skills/dsh-prose-standard/references/examples.md

@@ -106,7 +106,7 @@ Remove migration tasks and test narration. Keep the tiers, behaviors they pin, r
 
 **Over-trimmed:** “Mounted plugins share the host's authority.”
 
-**Balanced:** “Mounted plugins share the host's authority; for example, access to `ctx.bash` permits commands with the host executor's privileges.”
+**Balanced:** “Mounted plugins share the host's authority; for example, access to `ctx.shell` permits commands with the host executor's privileges.”
 
 **Over-detailed:** A list of every service a plugin could misuse and every hypothetical exploit.