.agents/skills: drop SF-internal skills (forge-*, nix-build, smoke-test)

The .agents/ template was seeded from singularity-forge which carries
its own internal skills. They don't apply to this repo; removing so
each repo's skills/ reflects only what's relevant here. .gitkeep
remains so the (required-per-spec) directory still exists.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

.agents/skills/forge-autonomous-runtime/SKILL.md

@@ -1,37 +0,0 @@
----
-name: forge-autonomous-runtime
-description: Explains SF autonomous loop, UOK gates, installed-runtime drift, and recovery paths.
-user-invocable: false
-model-invocable: true
-side-effects: none
-permission-profile: restricted
-triggers:
-  - "*"
----
-
-# forge-autonomous-runtime
-
-## Context
-
-SF's autonomous mode is governed by the Unified Operation Kernel (UOK):
-
-1. **State reading** — UOK reads canonical project state from `.sf/sf.db`
-2. **Ledger recording** — Each run is recorded in the DB-backed ledger
-3. **Projection** — Runtime files under `.sf/runtime/` are generated projections
-4. **Dispatch** — UOK determines the next unit of work and creates a fresh agent session
-5. **Execution** — LLM executes with focused prompt and pre-inlined context
-6. **Reconciliation** — UOK reconciles ledger and projections before next dispatch
-
-## Recovery Paths
-
-- **Crash recovery** — Lock file tracks current unit; next `/autonomous` reads surviving state
-- **Stuck detection** — Loop detects stuck iterations and emits `stuck-detected` journal events
-- **Health gates** — Pre-dispatch gates check state integrity before execution
-- **Parity reports** — Ledger parity ensures no orphaned or missing unit records
-
-## Rules
-
-- Never modify `.sf/sf.db` directly — use UOK APIs
-- Never trust `.sf/runtime/` files as authoritative — they are projections
-- Always check `runControl` and `permissionProfile` before tool invocation
-- Journal events are best-effort; absence is a failure signal

.agents/skills/forge-command-surface/SKILL.md

@@ -1,48 +0,0 @@
----
-name: forge-command-surface
-description: Use when changing SF slash commands, browser command parity, or headless command dispatch.
-user-invocable: true
-model-invocable: true
-side-effects: code-edits
-permission-profile: normal
-triggers:
-  - build
-  - code
-  - "*"
----
-
-# forge-command-surface
-
-## When to Use
-
-This skill applies when:
-- Adding or modifying SF slash commands (`/mode`, `/tasks`, `/skills`, etc.)
-- Changing command handlers in `src/resources/extensions/sf/commands/handlers/`
-- Updating command catalog descriptions
-- Ensuring web/TUI/headless command parity
-- Modifying command dispatch routing
-
-## Instructions
-
-1. **Check existing handlers** — Look in `commands/handlers/core.js` and `commands/handlers/ops.js` for the pattern
-2. **Update catalog** — Add to `commands/catalog.js` `TOP_LEVEL_SUBCOMMANDS`
-3. **Update help text** — Add to `showHelp()` in `commands/handlers/core.js`
-4. **Wire dispatch** — Add routing in `handleCoreCommand()` or `handleOpsCommand()`
-5. **Test** — Verify with `node --check` and manual test
-
-## Verification
-
-- [ ] Command appears in `/help`
-- [ ] Command appears in `/help all`
-- [ ] Handler file passes `node --check`
-- [ ] No `/sf` prefix in user-facing strings
-
-## Examples
-
-```javascript
-// Adding a new command
-if (trimmed === "mycommand" || trimmed.startsWith("mycommand ")) {
-    await handleMyCommand(trimmed.replace(/^mycommand\s*/, "").trim(), ctx);
-    return true;
-}
-```

.agents/skills/nix-build/SKILL.md

@@ -1,26 +0,0 @@
----
-name: nix-build
-description: Build any @singularity-forge/* package (or the full stack) via nix develop. Pass a package name like "pi-coding-agent", "native", "daemon", or "all" for a full core build.
----
-
-All build commands in this repo must run inside `nix develop`. Never use bare cargo/rustc.
-
-For a single package:
-```
-nix develop --command bash -c "npm run --workspace=@singularity-forge/<package> build"
-```
-
-For the full core build (native + all TS packages):
-```
-nix develop --command bash -c "npm run build:core"
-```
-
-For typecheck only:
-```
-nix develop --command bash -c "tsc --noEmit -p tsconfig.json"
-```
-
-For extensions typecheck:
-```
-nix develop --command bash -c "tsc --noEmit -p tsconfig.extensions.json"
-```

.agents/skills/smoke-test/SKILL.md

@@ -1,17 +0,0 @@
----
-name: smoke-test
-description: Run the standard sf-run smoke tests (--version, --help, --print). All three must pass before shipping a build.
----
-
-#!/bin/bash
-set -e
-echo "=== --version ==="
-node dist/loader.js --version
-
-echo "=== --help (first 5 lines) ==="
-node dist/loader.js --help 2>&1 | head -5
-
-echo "=== --print (graceful degradation) ==="
-node dist/loader.js --print 2>&1 | head -5
-
-echo "All smoke tests passed."