claude-profile: remove provider-yaml system, embed model config in profiles

Provider selection phase removed; Anthropic driver→model_id is now
hardcoded in the script and non-Anthropic profiles supply provider.env
(MODEL_ID, ANTHROPIC_BASE_URL, ANTHROPIC_API_KEY_FILE).

Test suite baseline changes 58 → 41 assertions: the 17 dropped
assertions covered the removed provider-yaml selection phase, not
retained behaviour.

Includes refactor-derived memory: decisions (provider architecture,
driver enforcement via --model), bash gotchas (read -rp under set -e,
never eval user config), process lessons.

data/claude-profile/presets.yaml.example

@@ -7,42 +7,38 @@
 
 # A "deep work" session on the homelab cluster
 deep-cluster:
-  profile: oreillyit
+  profile: oreillyit-anthropic
   mode: deep
   project: cluster-bootstrap
-  time_horizon: hours
   async: yes
 
 # A quick edit on the small-scripts repo (no questions, just launch)
 quick-skills:
-  profile: oreillyit
+  profile: oreillyit-anthropic
   mode: quick
   project: small-scripts
 
 # Overnight orchestration of container agents on the image-gen project
 orch-overnight:
-  profile: oreillyit
+  profile: oreillyit-anthropic
   mode: orch
   project: ai-image-gen
-  time_horizon: overnight
   autoloop: yes
 
 # Cheap conversational session, no project
 chat-only:
-  profile: oreillyit
+  profile: oreillyit-anthropic
   mode: chat
 
 # Hybrid session — Haiku driver with Opus subagents on call
 hybrid-day:
-  profile: oreillyit
+  profile: oreillyit-anthropic
   mode: hybrid
   project: cluster-bootstrap
-  time_horizon: hours
   async: yes
 
-# Quick session via MiniMax — uses the minimax profile (no OAuth credentials)
+# Quick session via MiniMax — uses the minimax profile (provider.env embedded)
 quick-minimax:
-  profile: minimax
+  profile: oreillyit-minimax
   mode: quick
-  provider: minimax-sonnet
   project: small-scripts