Skill: catalog-first pricing, centralised disclaimer, deck verification

Six fixes after a Codex transcript that scraped oracle.com for SKUs already
in kb/pricing/oci-sku-catalog.yaml. New option-4 cost-estimate flow with a
"catalog first, web never" rule, staleness gate, and miss policy; unconditional
Cookbook scope (any pricing or SKU work, not just specific tool calls); hard
no-WebSearch rule under "What You Do NOT Do"; disclaimer field extended with
reference-only / no-client-discount clauses and referenced from options 4/8/13
(single source of truth — oci_bom_gen.py already consumes it); tightened menu
hints separating option 4 (quick comparison while you scope) from option 13
(formal .xlsx artefact you send); structural deck verification step for
Linux/WSL where PowerPoint binary isn't available.

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

kb/pricing/oci-sku-catalog.yaml

@@ -10,7 +10,8 @@ disclaimer: 'This sample quote is provided solely for evaluation purposes and is
   for the services specified. If you would like to purchase the services specified in this sample quote, please request that
   Oracle issue you a formal quote (which may include an OMA or a CSA if you do not already have an appropriate agreement in
   place with Oracle) for your acceptance and execution. Your formal quote will be effective only upon Oracle''s acceptance
-  of the formal quote (and the OMA or CSA, if required).
+  of the formal quote (and the OMA or CSA, if required). This is reference material, not a commercial commitment, and any
+  client-specific discounts negotiated with Oracle are not reflected in the prices shown.
 
   '
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