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>

docs/skill/output-formats.md

@@ -0,0 +1,73 @@
+# Output Formats and Conventions
+
+Referenced from `SKILL.md` § Output Generation.
+
+## Output directory convention
+
+All generated files MUST be saved inside a dedicated output folder per customer/initiative:
+
+```
+examples/output-<customer>-<initiative>/
+```
+
+Examples:
+- `examples/output-meli-im06/` — MELI MySQL engagement
+- `examples/output-meli-im30/` — MELI ElasticSearch engagement
+- `examples/output-acme-migration/` — ACME cloud migration
+
+This folder contains ALL outputs for that engagement: `.pptx`, `.drawio`, `.yaml` specs, `.pdf`, scorecards. The folder is gitignored via `examples/output-*/` — never commit customer data.
+
+YAML spec files (architecture, workload-profile, diagram-spec) are saved IN the output folder, not loose in `examples/`. This keeps everything grouped and portable.
+
+## Format options
+
+Default output is a **slide deck (.pptx)**. The architect can specify:
+
+| Format | Output |
+|--------|--------|
+| `deck` (default) | 10-12 slide presentation |
+| `deck + drawio` | + editable architecture diagram |
+| `deck + doc` | + technical document (15-25 pages) |
+| `deck + xlsx` | + cost spreadsheet with formulas |
+| `deck + pdf` | + customer-facing PDF (branded, no internal refs) |
+| `pdf` | Customer PDF only |
+| `full` | Everything (pptx + drawio + docx + xlsx + pdf) |
+| `doc only` | Technical document without slides |
+| `deliver` | Handover + go-live checklist + success criteria |
+
+## Slide deck structure
+
+Slide count adapts to engagement tier (6-8 small, 10-12 standard, 12-16 complex):
+
+1. **Title** — customer, project, date (dark background)
+2. **Value Story** — business driver, hypothesis, desired outcomes
+3. **Service Tiering** — workload-to-tier mapping (Platinum/Gold/Silver/Bronze) with SLA, RTO/RPO
+4. **Architecture Principles** — selected ECAL principles (Design/Deployment/Service) that govern the architecture
+5. **Architecture Diagram** — fills 85% of slide
+6. **Architecture Decisions** — 4-6 key decisions with rationale
+7. **HA/DR** — topology + RTO/RPO per tier
+8. **Security & Compliance** — controls grid, compliance badges
+9. **Environment Catalogue** — Prod/Pre-Prod/Dev-Test/DR per workload with sizing and isolation
+10. **Cost Estimate** — PAYG vs BYOL table with assumptions (all environments)
+11. **Cost Comparison** (optional) — vs current state or competitor
+12. **Migration Approach** — phased timeline, tools, downtime strategy
+13. **Operational RACI** — responsibility matrix (customer vs Oracle/partner)
+14. **Risk Register** — severity-coded risk table
+15. **Well-Architected Scorecard** — 5-pillar traffic-light indicators
+16. **Next Steps** — concrete SMART actions with dates
+
+Use `tools/oci_deck_gen.py` for generation. Colors: teal `#2D5967`, copper `#AA643B`, purple `#804998`. Font: Segoe UI. Design standards: `config/output-formats.yaml`.
+
+## Architecture diagram
+
+Use `tools/oci_diagram_gen.py` with OCI official styles from `kb/diagram/oci-toolkit-styles.yaml`. Containers, service blocks, connections, and typography rules are defined there.
+
+## Service categorization
+
+| Category | Color | Use |
+|----------|-------|-----|
+| **Infrastructure** | Teal `#2D5967` | Compute, OKE, LB, Gateways, WAF, Bastion, Storage, Monitoring |
+| **Database** | Copper `#AA643B` | ADB-S/D, DBCS, ExaCS, MySQL, PostgreSQL, NoSQL, GoldenGate |
+| **Integration** | Purple `#804998` | DRG, Streaming, Queue, OIC, FastConnect, Service Connector Hub |
+| **Dormant** | Light gray `#DFDCD8` | Standby/inactive resources (DR tier) |
+| **Legacy** | Medium gray `#70665E` | Non-OCI systems (MQ Series, legacy middleware) |