Auto-refresh KB pricing, align skill with Anthropic best practices

Why this set of changes:
- KB pricing was drifting silently — domain files (database.yaml,
  storage.yaml, etc.) had prices 30-800% off the live Oracle API and
  nobody read them. The skill was auditing as stale on every check
  with no path to fix it.
- The skill itself violated Anthropic's spec (`name` field had
  uppercase/spaces) and was over the 500-line guideline (647 lines),
  hurting discovery and load performance.
- Welcome flow occasionally improvised the menu instead of reading
  SKILL.md, missing options.

Pricing — single source of truth, fully automated:
- Extend tools/refresh_sku_catalog.py with --refresh-domain compute,
  pulls shape-level prices from the Oracle public pricing API
  (apexapps.oracle.com), preserves manual fields (notes, GPU specs,
  free-tier annotations, estimation_helpers), recomputes derived
  monthly values, and protects $0 free-tier prices from overwrite.
- Delete 12 redundant pricing/<domain>.yaml files. They duplicated
  oci-sku-catalog.yaml with worse abstractions and were nobody's
  source of truth (no tool consumed them).
- Migrate the genuinely valuable knowledge from those 12 files
  (billing models, BYOL rules, free-tier rules, ECPU vs OCPU,
  X11M elastic model, hyperscaler comparisons, service nuances)
  into kb/field-knowledge/pricing-knowledge.yaml — non-numeric,
  no refresh needed.
- Result: pricing freshness check goes from 13 stale files to 0.

KB freshness automation:
- Add tools/kb_freshness.py — wrapper around kb_linter.check_freshness()
  with --check, --auto-refresh, --json, --quiet modes. Bridges stale
  files to their refresh tools (SKU catalog, compute domain, arch
  center). Wired into the welcome flow as a pre-flight banner that
  asks the user before refreshing.
- Fix pre-existing kb_linter bug: it crashed on the 45 multi-doc
  YAML files (frontmatter + body pattern) because it used safe_load
  instead of safe_load_all. Freshness check was effectively dead.
- Standardize timestamp field: linter now accepts last_verified,
  last_updated, and last_refreshed; refresh_arch_catalog writes
  last_verified instead of last_refreshed.
- Add make freshness / make freshness-refresh targets.

Skill alignment with Anthropic Agent Skills best practices:
- Rename `name: OCI Deal Accelerator` to `oci-deal-accelerator`
  to comply with the [a-z0-9-]{1,64} spec.
- Refactor SKILL.md from 674 to 445 lines via progressive disclosure:
  extract WA review output format, ECAL readiness format, and output
  conventions into docs/skill/*.md referenced from the main file.
- Add scripts/sync-skill.py + make sync-skill: source of truth is
  root SKILL.md, .agents/skills/oci-deal-accelerator/SKILL.md is
  auto-generated. make lint validates sync.
- Add evaluations/ with 3 manual baseline scenarios (welcome-flow,
  full-proposal, wa-review) per the Anthropic best-practices guidance
  to "build evaluations first."

Welcome flow hardening:
- Tighten CLAUDE.md to MANDATE reading SKILL.md before showing the
  menu (no improvising), and document the freshness pre-flight check
  with the ask-before-refresh user flow.
- Update SKILL.md welcome flow to instruct: parse kb_freshness JSON,
  show banner with stale count + oldest file, prompt user to refresh
  (only when an automated tool exists), fall back silently on errors.

Linter hygiene (zero remaining issues):
- Expand config/kb-tags.yaml taxonomy with features, operations,
  metrics, limitations sections covering 31 previously-unknown tags
  used in field findings (rac, ecpu, refreshable-clone, hnsw, etc.).
- Assign owners for kb/compatibility/, kb/competitive/,
  kb/well-architected/ (Diego Cabrera as default until team grows);
  kb/pricing/ marked as "Auto-refreshed" since it no longer needs
  human ownership.
- kb_linter accepts top-level `date` as fallback for contributor
  block; migrate FF-202603-008 from legacy `reported_by` to
  contributor block.
- Result: linter goes from 45 issues to 0.

Other:
- Recompute estimation_helpers monthly values in compute.yaml after
  the price refresh (they were derived from the old E5/A1 numbers).
- Add kb/README.md — contributor guide (directory map, frontmatter
  spec, refresh tooling, review cadence).

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

config/kb-governance.yaml

@@ -28,7 +28,7 @@ review_triggers:
   - event: "Oracle database version release"
     action: "Review all feature matrix entries. Mark untested. Validate within 14 days."
   - event: "Oracle pricing change"
-    action: "Update kb/pricing/ files. Verify cost calculator accuracy."
+    action: "Run python tools/refresh_sku_catalog.py --refresh and --refresh-domain compute. Both pull from the live Oracle pricing API."
   - event: "After customer engagement"
     action: "Run After-Engagement Review (AER). Add findings and KB updates."
   - event: "Quarterly"

config/kb-owners.yaml

@@ -20,15 +20,15 @@ domains:
     review_cadence: "quarterly"
 
   - area: "kb/compatibility/"
-    owner: { name: "TBD", team: "Database Specialists" }
+    owner: { name: "Diego Cabrera", team: "Field SA" }
     review_cadence: "on Oracle version release + quarterly"
 
   - area: "kb/pricing/"
-    owner: { name: "TBD", team: "Solution Engineering" }
-    review_cadence: "monthly (pricing changes frequently)"
+    owner: { name: "Auto-refreshed", team: "Oracle Public Pricing API" }
+    review_cadence: "automatic — refresh tools pull from the API on demand; freshness checker runs in welcome flow"
 
   - area: "kb/competitive/"
-    owner: { name: "TBD", team: "Competitive Intelligence" }
+    owner: { name: "Diego Cabrera", team: "Field SA" }
     review_cadence: "quarterly + on competitor announcements"
 
   - area: "kb/field-findings/"
@@ -36,5 +36,5 @@ domains:
     review_cadence: "continuous"
 
   - area: "kb/well-architected/"
-    owner: { name: "TBD", team: "Cloud Architecture" }
+    owner: { name: "Diego Cabrera", team: "Field SA" }
     review_cadence: "on Oracle WA Framework updates"

config/kb-tags.yaml

@@ -12,6 +12,7 @@
 ---
 taxonomy:
   products:
+    - adb       # generic ADB (covers both -s and -d)
     - adb-s
     - adb-d
     - dep
@@ -26,6 +27,8 @@ taxonomy:
     - goldengate
     - data-safe
     - vault
+    - rac
+    - proxysql
 
   versions:
     - 19c
@@ -44,6 +47,42 @@ taxonomy:
     - sizing
     - compliance
 
+  features:
+    - adg                  # Active Data Guard
+    - ai-vector-search
+    - vector-search
+    - hnsw                 # Hierarchical Navigable Small World indexes
+    - json
+    - partitioning
+    - refreshable-clone
+    - elastic-pool
+    - ecpu                 # ECPU billing model (vs OCPU)
+    - connection-pooling
+    - distributed
+    - immutable
+    - serialization
+
+  operations:
+    - cli
+    - maintenance-window
+    - provisioning
+    - planning
+    - lead-time
+    - capacity
+    - node-split
+    - zero-downtime
+    - bidirectional
+    - detection-delay
+    - stale-reads
+
+  metrics:
+    - latency
+    - 100m                 # 100 million scale (e.g. vector counts)
+
+  limitations:
+    - limitation
+    - sr-required          # Service Request required to enable / fix
+
   severity_tags:
     - blocker
     - workaround-available