remove c0re.operatorPronouns and c0re.contextWindowTokens

Both options are now ignored with a warning (the swarm-peers-removed.nix
shape), so a host that still sets one keeps evaluating.

- operatorPronouns: the agents' system prompt names the pronouns as
  she/her, the value the harness fell back to and the option's default.
  The --operator-pronouns flag, HiveEnv field, meta-flake let binding
  and HIVE_OPERATOR_PRONOUNS env var are gone.
- contextWindowTokens: the per-family defaults (haiku 200000, sonnet
  1000000, opus 1000000) move into hive-agent's harness_state as a
  table; the window the API reports after a turn still wins. The
  --context-window-tokens flag, HiveEnv field and the rendered
  HIVE_CONTEXT_WINDOW_TOKENS_<KEY> env vars are gone.

nix/host-modules/hive-c0re/options.nix

@@ -171,21 +171,6 @@
       default = 7000;
       description = "TCP port the hive-c0re dashboard listens on.";
     };
-    operatorPronouns = lib.mkOption {
-      type = lib.types.str;
-      default = "she/her";
-      example = "they/them";
-      description = ''
-        Operator pronouns, free text. Threaded into every agent
-        container as the `HIVE_OPERATOR_PRONOUNS` env var; the
-        harness substitutes it into the agent / manager system
-        prompt at boot so claude refers to the operator naturally
-        in third person ("ask her", "tell them", etc.). Changes
-        propagate to running agents on the next `↻ R3BU1LD` —
-        forwards as a meta flake env-var bump, no per-agent
-        approval needed.
-      '';
-    };
     preBuildAgentTemplates = lib.mkOption {
       type = lib.types.bool;
       default = false;
@@ -212,31 +197,6 @@
         store.
       '';
     };
-    contextWindowTokens = lib.mkOption {
-      type = lib.types.attrsOf lib.types.int;
-      default = {
-        haiku = 200000;
-        sonnet = 1000000;
-        opus = 1000000;
-      };
-      example = {
-        haiku = 150000;
-        sonnet = 900000;
-      };
-      description = ''
-        Per-model context-window sizes in tokens. Each key is a
-        model-family short name matched case-insensitively as a
-        substring of the active model name at runtime (e.g. `"sonnet"`
-        matches `"claude-sonnet-4-5"`). The defaults cover the known
-        Anthropic families; add entries for new models or override
-        existing ones here to change the window for all agents at once.
-
-        Passed to `hive-c0re serve` as JSON and injected into every
-        container's harness service environment as
-        `HIVE_CONTEXT_WINDOW_TOKENS_<KEY_UPPER>`. Changes propagate
-        on the next `↻ R3BU1LD` — no per-agent approval needed.
-      '';
-    };
 
     modelPrices = lib.mkOption {
       type = lib.types.attrsOf (