Move all three skills into skills/; add root README; fix paths

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>

skills/rpa-dashboard-ai/templates/reference/backend/gemini_cost.py

@@ -0,0 +1,61 @@
+# EXAMPLE ONLY: an extract from the Superbill Review prototype, kept as reference for porting. ECW/eClinicalWorks, Tebra, 'Example Client', SPB_* tables and patient/ticket wording are that project's examples. Don't copy them into a new project.
+INCLUDE_THINKING_IN_COST = True  # thinking tokens bill at output rate
+
+# ═════════════════════════════════════════════════════════════════════════════
+# GEMINI PRICING TABLE
+# ═════════════════════════════════════════════════════════════════════════════
+PRICING_SOURCE = "https://ai.google.dev/gemini-api/docs/pricing"
+PRICING_AS_OF  = "2026-08-11"
+
+GEMINI_PRICING = {
+    # ---- Gemini 3.x family --------------------------------------------------
+    "gemini-3.6-flash":            {"input": 1.50,  "output": 7.50,  "free_tier": True},
+    "gemini-3.5-flash":            {"input": 1.50,  "output": 9.00,  "free_tier": True},
+    "gemini-3.5-flash-lite":       {"input": 0.30,  "output": 2.50,  "free_tier": True},
+    "gemini-3-flash-preview":      {"input": 0.50,  "output": 3.00,  "free_tier": True},
+    "gemini-3.1-flash-lite":       {"input": 0.25,  "output": 1.50,  "free_tier": True},
+    "gemini-3.1-pro-preview": {
+        "input": 2.00, "output": 12.00, "free_tier": False,
+        "long_threshold": 200_000, "input_long": 4.00, "output_long": 18.00,
+    },
+    # ---- Gemini 2.5 family --------------------------------------------------
+    "gemini-2.5-pro": {
+        "input": 1.25, "output": 10.00, "free_tier": True,
+        "long_threshold": 200_000, "input_long": 2.50, "output_long": 15.00,
+    },
+    "gemini-2.5-flash":                      {"input": 0.30, "output": 2.50, "free_tier": True},
+    "gemini-2.5-flash-lite":                 {"input": 0.10, "output": 0.40, "free_tier": True},
+    "gemini-2.5-flash-lite-preview-09-2025": {"input": 0.10, "output": 0.40, "free_tier": True},
+    # ---- Gemini 2.0 family (DEPRECATED — shut down 2026-06-01) --------------
+    "gemini-2.0-flash":      {"input": 0.10,  "output": 0.40, "free_tier": True, "deprecated": True},
+    "gemini-2.0-flash-lite": {"input": 0.075, "output": 0.30, "free_tier": True, "deprecated": True},
+}
+
+
+def resolve_pricing(model: str, input_tokens: int):
+    if model not in GEMINI_PRICING:
+        raise KeyError(
+            f"No pricing entry for model '{model}'. Add it to GEMINI_PRICING "
+            f"from {PRICING_SOURCE}. Known models: {', '.join(GEMINI_PRICING)}"
+        )
+    p = GEMINI_PRICING[model]
+    note = ""
+    in_rate, out_rate = p["input"], p["output"]
+    threshold = p.get("long_threshold")
+    if threshold and input_tokens > threshold:
+        in_rate  = p.get("input_long",  in_rate)
+        out_rate = p.get("output_long", out_rate)
+        note = f"long-context rate (>{threshold:,} input tokens)"
+    return in_rate, out_rate, note
+
+
+def cost_for_call(model: str, usage: dict):
+    in_rate, out_rate, note = resolve_pricing(model, usage["input"])
+    billable_output = usage["output"]
+    if INCLUDE_THINKING_IN_COST:
+        billable_output += usage.get("thinking", 0)
+    input_cost  = usage["input"]  / 1_000_000 * in_rate
+    output_cost = billable_output / 1_000_000 * out_rate
+    return input_cost + output_cost, input_cost, output_cost, note
+
+