v0.8.2: cleanup + prose + structure + decomposition + budget + errors

Phase 1 — dedup + hardening (~9 items):
- Remove duplicate *skill-registry* defvar from core-skills
- Merge *backend-registry* into *probabilistic-backends*, delete backend-register
- Remove inject-stimulus alias, standardize on stimulus-inject
- Add pre-eval sandbox (skill-source-scan) blocks restricted symbols before eval
- Remove dead plist-get function; remove duplicate json-alist-to-plist export
- Fix read-framed-message whitespace DoS (4096-iteration max)
- Add *read-eval* nil to dispatcher-approvals-process read-from-string (RCE)
- Add test-op to ASDF; update .asd version 0.4.3→0.7.2

Phase 2 — prose + contracts + reorder:
- Split ROADMAP: 2623→1089 lines (TODO only), CHANGELOG: 260→1528 lines (full DONE history, 14 versions reverse chron)
- Add Contracts + Overview to 6 channel files + embedding-native + programming-standards + symbolic-scope
- Reorder 28 .org files: Contract → Test Suite → Implementation (TDD order)
- Add 7-phase inline prose to think() in core-reason
- Expand USER_MANUAL: 183→461 lines (10 new sections)

Phase 3 — decomposition + export organization:
- Decompose think() into think-assemble-prompt, think-call-llm, think-parse-response orchestrator
- Organize 188 exports into 16 grouped sections by module

Phase 4 — budget enforcement + error protocol:
- Per-session budget enforcement (SESSION_BUDGET_USD env var, budget-exhausted-p, guard in think-call-llm)
- Error condition hierarchy (6 conditions: pipeline-error, llm-error, gate-error, budget-error, protocol-error)
- Restarts in loop-process: skip-signal, use-fallback, abort-pipeline

org/neuro-provider.org

@@ -44,6 +44,65 @@ Providers register themselves at boot. No API key? That provider doesn't registe
    for ~data: <content>~ lines, ~:done~ for ~data: [DONE]~, and ~nil~
    for comment lines (starting with ~:~), empty lines, or non-data lines.
 
+* Test Suite
+#+begin_src lisp
+(eval-when (:compile-toplevel :load-toplevel :execute)
+  (ql:quickload :fiveam :silent t))
+
+(defpackage :passepartout-llm-gateway-tests
+  (:use :cl :passepartout)
+  (:export #:llm-gateway-suite))
+
+(in-package :passepartout-llm-gateway-tests)
+
+(fiveam:def-suite llm-gateway-suite :description "Tests for the LLM provider backend")
+(fiveam:in-suite llm-gateway-suite)
+
+(fiveam:test test-provider-rejects-bad-keyword
+  "Contract 3: provider-config returns nil for unregistered provider."
+  (let ((config (provider-config :not-a-real-provider)))
+    (fiveam:is (null config))))
+
+(fiveam:test test-provider-config-registered
+  "Contract 1: provider-config returns configuration plist for registered provider."
+  (let ((config (provider-config :openrouter)))
+    (fiveam:is (listp config))
+    (fiveam:is (getf config :base-url))))
+
+(fiveam:test test-provider-accepts-tools-parameter
+  "Contract 4: provider-openai-request accepts :tools parameter without error."
+  (let ((result (provider-openai-request "test" "system" :tools (list))))
+    (fiveam:is (member (getf result :status) '(:success :error)))))
+
+;; ── v0.7.1 Streaming ──
+
+(fiveam:test test-parse-sse-line-data
+  "Contract 6: parse-sse-line extracts content from data: lines."
+  (fiveam:is (string= "hello world" (passepartout::parse-sse-line "data: hello world")))
+  (fiveam:is (string= "{\"a\":1}" (passepartout::parse-sse-line "data: {\"a\":1}"))))
+
+(fiveam:test test-parse-sse-line-done
+  "Contract 6: parse-sse-line returns :done for [DONE]."
+  (fiveam:is (eq :done (passepartout::parse-sse-line "data: [DONE]"))))
+
+(fiveam:test test-parse-sse-line-nil
+  "Contract 6: parse-sse-line returns nil for comment, empty, non-data lines."
+  (fiveam:is (null (passepartout::parse-sse-line "")))
+  (fiveam:is (null (passepartout::parse-sse-line ":ok")))
+  (fiveam:is (null (passepartout::parse-sse-line "event: ping"))))
+
+(fiveam:test test-provider-openai-stream-calls-callback
+  "Contract 5: provider-openai-stream calls callback with deltas and final empty string."
+  (let ((collected '()))
+    (flet ((collector (text) (push text collected)))
+      (passepartout::provider-openai-stream "hi" "sys" #'collector :provider :openrouter))
+    (let* ((reversed (nreverse collected))
+           (last (car (last reversed))))
+      (fiveam:is (stringp last))
+      (fiveam:is (string= "" last))
+      (fiveam:is (>= (length reversed) 2)))))
+#+end_src
+
 * Implementation
 
 ** Provider registry
@@ -350,61 +409,3 @@ Calls CALLBACK with each delta string, then with '' to signal end-of-stream."
           (list :status :error :message (format nil "~a Stream Failure: ~a" provider c)))))))
 #+end_src
 
-* Test Suite
-#+begin_src lisp
-(eval-when (:compile-toplevel :load-toplevel :execute)
-  (ql:quickload :fiveam :silent t))
-
-(defpackage :passepartout-llm-gateway-tests
-  (:use :cl :passepartout)
-  (:export #:llm-gateway-suite))
-
-(in-package :passepartout-llm-gateway-tests)
-
-(fiveam:def-suite llm-gateway-suite :description "Tests for the LLM provider backend")
-(fiveam:in-suite llm-gateway-suite)
-
-(fiveam:test test-provider-rejects-bad-keyword
-  "Contract 3: provider-config returns nil for unregistered provider."
-  (let ((config (provider-config :not-a-real-provider)))
-    (fiveam:is (null config))))
-
-(fiveam:test test-provider-config-registered
-  "Contract 1: provider-config returns configuration plist for registered provider."
-  (let ((config (provider-config :openrouter)))
-    (fiveam:is (listp config))
-    (fiveam:is (getf config :base-url))))
-
-(fiveam:test test-provider-accepts-tools-parameter
-  "Contract 4: provider-openai-request accepts :tools parameter without error."
-  (let ((result (provider-openai-request "test" "system" :tools (list))))
-    (fiveam:is (member (getf result :status) '(:success :error)))))
-
-;; ── v0.7.1 Streaming ──
-
-(fiveam:test test-parse-sse-line-data
-  "Contract 6: parse-sse-line extracts content from data: lines."
-  (fiveam:is (string= "hello world" (passepartout::parse-sse-line "data: hello world")))
-  (fiveam:is (string= "{\"a\":1}" (passepartout::parse-sse-line "data: {\"a\":1}"))))
-
-(fiveam:test test-parse-sse-line-done
-  "Contract 6: parse-sse-line returns :done for [DONE]."
-  (fiveam:is (eq :done (passepartout::parse-sse-line "data: [DONE]"))))
-
-(fiveam:test test-parse-sse-line-nil
-  "Contract 6: parse-sse-line returns nil for comment, empty, non-data lines."
-  (fiveam:is (null (passepartout::parse-sse-line "")))
-  (fiveam:is (null (passepartout::parse-sse-line ":ok")))
-  (fiveam:is (null (passepartout::parse-sse-line "event: ping"))))
-
-(fiveam:test test-provider-openai-stream-calls-callback
-  "Contract 5: provider-openai-stream calls callback with deltas and final empty string."
-  (let ((collected '()))
-    (flet ((collector (text) (push text collected)))
-      (passepartout::provider-openai-stream "hi" "sys" #'collector :provider :openrouter))
-    (let* ((reversed (nreverse collected))
-           (last (car (last reversed))))
-      (fiveam:is (stringp last))
-      (fiveam:is (string= "" last))
-      (fiveam:is (>= (length reversed) 2)))))
-#+end_src