feat: add presence skill — visible value, not noise

Defines how ArcheFlow communicates: compact status lines per phase,
show outcomes not mechanics, silence for clean passes. One-line
activation indicator at session start.

skills/presence/SKILL.md

@@ -0,0 +1,160 @@
+---
+name: presence
+description: |
+  Defines how ArcheFlow communicates its activity to the user — visible but not noisy.
+  Show value, not process. Auto-loaded by the run skill.
+---
+
+# ArcheFlow Presence — Visible Value, Not Noise
+
+ArcheFlow should feel like a skilled colleague working alongside you: you know they're there, you see results, but they don't narrate every keystroke.
+
+## Principles
+
+1. **Show outcomes, not mechanics.** "Guardian caught a timeline bug" — good. "Spawning Guardian agent with attention filters..." — noise.
+2. **One line per phase, not per agent.** The user sees phases complete, not individual agent lifecycle.
+3. **Numbers over words.** "2 fixes applied" beats "We have successfully applied two fixes to the codebase."
+4. **Silence is fine.** If a phase completes cleanly with no findings, don't announce it. Clean passes are the expected case.
+5. **Value at the end.** The completion summary is the most important output — what was built, what was caught, what was fixed.
+
+## Status Line Format
+
+At key moments during a run, output a compact status line:
+
+### Run Start
+```
+── archeflow ── <task> ── <workflow> (<max_cycles> cycles) ──
+```
+Example:
+```
+── archeflow ── Write story "Der Huster" ── kurzgeschichte (2 cycles) ──
+```
+
+### Phase Complete (only if something happened worth mentioning)
+```
+  ✓ plan    explorer: 3 directions → chose C (Koffer) | creator: 6 scenes
+  ✓ do      6004 words drafted
+  △ check   guardian: 1 fix needed | sage: 5 voice adjustments
+  ✓ act     6 fixes applied
+```
+
+Symbols:
+- `✓` — phase clean, no issues
+- `△` — phase found issues (fixes needed)
+- `✗` — phase failed (blocked, needs user input)
+
+### Run Complete
+```
+── done ── 1 cycle · 5 agents · 6 fixes · ~22 min ──
+```
+
+If value was delivered, add a one-liner:
+```
+── done ── 1 cycle · 5 agents · 6 fixes · ~22 min ──
+   story drafted, reviewed, and polished. see stories/01-der-huster.md
+```
+
+### Run Complete (with DAG, if terminal supports it)
+Only show if the user explicitly asks or if `progress.dag_on_complete: true` in config:
+```
+── archeflow ── complete ──────────────────────
+#1 run.start
+├── #2 explorer → #3 decision (C) → #4 creator
+├── #6 maker (6004 words)
+├── #8 guardian △1 · #9 sage △5
+└── #12 complete [6 fixes]
+───────────────────────────────────────────────
+```
+
+## When to Be Silent
+
+- **Agent spawning/completion** — don't announce
+- **Event emission** — internal bookkeeping, never visible
+- **Artifact routing** — internal
+- **Clean review passes** — if Guardian says APPROVED with 0 findings, skip it
+- **Phase transitions** — only show if the phase produced visible output
+
+## When to Speak
+
+- **Run start** — always (user should know ArcheFlow activated)
+- **Findings found** — always (this is the value)
+- **Fixes applied** — always (this is the outcome)
+- **Run complete** — always (closure)
+- **Budget warnings** — always (user needs to know)
+- **Shadow detected** — always (something went wrong)
+- **User decision needed** — always (blocking)
+
+## Activation Indicator
+
+When ArcheFlow activates at session start (via the `using-archeflow` skill), show ONE line:
+
+```
+archeflow v0.3.0 · 24 skills · writing domain detected
+```
+
+Or for code projects:
+```
+archeflow v0.3.0 · 24 skills · code domain
+```
+
+If ArcheFlow decides NOT to activate (simple task, single file):
+```
+(nothing — silence is correct for simple tasks)
+```
+
+## Integration with Progress File
+
+The `.archeflow/progress.md` file is the detailed view for users who want more. The status lines above are the default — brief, inline, part of the conversation flow.
+
+Users who want the full picture: `archeflow-progress.sh <run_id> --watch` in a second terminal.
+
+## Anti-Patterns (Don't Do This)
+
+```
+❌ "I'm now activating the ArcheFlow orchestration framework..."
+❌ "Spawning Explorer agent with model haiku and attention filter..."
+❌ "The Guardian archetype has completed its security review and found..."
+❌ "Let me run the convergence detection algorithm to check..."
+❌ "According to the ArcheFlow process-log event schema..."
+```
+
+These expose internal mechanics. The user doesn't care about archetypes, attention filters, or event schemas. They care about: what was done, what was found, what was fixed.
+
+## Examples: Good Presence
+
+### Example 1: Feature Implementation
+```
+── archeflow ── Add JWT auth ── standard (2 cycles) ──
+  ✓ plan    3 files affected, JWT + middleware approach
+  ✓ do      implemented (auth.ts, middleware.ts, tests)
+  △ check   guardian: missing token expiry check
+  ✓ act     1 fix applied
+── done ── 1 cycle · 4 agents · 1 fix · ~8 min ──
+```
+
+### Example 2: Story Writing
+```
+── archeflow ── Write "Der Huster" ── kurzgeschichte (2 cycles) ──
+  ✓ plan    3 plot directions → chose C (Mo krank + Koffer)
+  ✓ do      6004 words, 7 scenes
+  △ check   1 timeline bug, 5 voice adjustments
+  ✓ act     6 fixes applied
+── done ── 1 cycle · 5 agents · 6 fixes · ~22 min ──
+   stories/01-der-huster.md ready
+```
+
+### Example 3: Quick Fix (minimal output)
+```
+── archeflow ── Fix pagination bug ── fast ──
+  ✓ fix applied, tests pass
+── done ── 1 cycle · 3 agents · ~4 min ──
+```
+
+### Example 4: Multi-Project
+```
+── archeflow ── giesing-story-v2 ── 3 projects ──
+  ✓ archeflow    artifact routing improved
+  ✓ colette      voice validation added
+  ✓ giesing      story #2 drafted (5800 words)
+── done ── 3 projects · 12 agents · ~35 min ──
+```