Clarify agent protocol: sequential doc reads required

Added critical instructions to AGENTS.md mandating that `.github/copilot-instructions.md` must be read first in every session, with all session-start steps executed before any code or query actions. Documented a strict sequential execution override, prohibiting parallel doc/code reads, and mapped Copilot tool names to Codex shell commands. No functional changes to appsettings.json.

AGENTS.md

@@ -0,0 +1,17 @@
+CRITICAL: Your FIRST action in every session MUST be reading `.github/copilot-instructions.md`. Execute ALL session-start instructions found there before responding to any user query. It is the single source of truth for this repo.
+
+## SEQUENTIAL EXECUTION OVERRIDE
+The AI AGENT CORE PROTOCOL in copilot-instructions.md requires STRICT SEQUENTIAL execution. This OVERRIDES any default parallelization behavior. Do NOT parallelize doc reads with code searches. The sequence is:
+1. Read copilot-instructions.md → process its rules FULLY
+2. Read ALL docs/ .md files listed in the protocol → wait for completion
+3. Output [LOADED_DOCS: ...] prefix
+4. ONLY THEN respond to the user's query or search code
+
+## Tool mapping for AI AGENT CORE PROTOCOL
+The copilot-instructions.md references Copilot tool names. Codex works through its shell + `apply_patch`, not named tools. Map them to Codex actions:
+- `get_file` / `file_search` → shell: `cat`, `sed -n`, `rg --files`
+- `code_search` / `get_symbols_by_name` / `find_symbol` → shell: `rg`
+- `replace_string_in_file` / `edit_file` → `apply_patch` (update)
+- `create_file` → `apply_patch` (add file)
+
+Follow the protocol using YOUR tools. The rules (LOADED_DOCS prefix, hard-gate, no-re-read, context recovery, explicit consent) apply equally to Codex.

FruitBankHybrid.Shared/appsettings.json

@@ -23,7 +23,6 @@
 			    }
 		    ]
 	    }
-
     },
   "AcHubConnection": {
     // Az Url innen KIVÉVE: az fbHub és a loggerHub is az AyCode:Urls:BaseUrl-ből származik (kódban: +/fbHub, +/loggerHub).

FruitBankHybrid.Web.Client/wwwroot/appsettings.json

@@ -23,7 +23,6 @@
 			    }
 		    ]
 	    }
-
     },
   "AcHubConnection": {
     // Az Url innen KIVÉVE: az fbHub és a loggerHub is az AyCode:Urls:BaseUrl-ből származik (kódban: +/fbHub, +/loggerHub).