Add changelog fragments

Author: the-headless-ghost

cardano-diffusion/changelog.d/20251211_130157_edgr_chainsync_timeouts.md

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+<!--
+A new scriv changelog fragment.
+
+Uncomment the section that is right (remove the HTML comment wrapper).
+For top level release notes, leave all the headers commented out.
+-->
+
+### Breaking
+
+- Moved `timeLimitsChainSync` from `Ouroboros.Network.Protocol.ChainSync.Codec` to `Cardano.Network.Protocol.ChainSync.Codec.TimeLimits`.
+- Added parameter `PeerTrustable` to `timeLimitsChainSync`.
+- Changed timeout behavior: No timeout when peer is trusted and ChainSync state is `StNext StMustReply`.
+

ouroboros-network/changelog.d/20251211_124142_edgr_chainsync_timeouts.md

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+<!--
+A new scriv changelog fragment.
+
+Uncomment the section that is right (remove the HTML comment wrapper).
+For top level release notes, leave all the headers commented out.
+-->
+
+### Breaking
+
+- Bumped `minChainSyncTimeout` to `601`.
+- Bumped `maxChainSyncTimeout` to `911`.
+- Moved `timeLimitsChainSync` from `Ouroboros.Network.Protocol.ChainSync.Codec` to `Cardano.Network.Protocol.ChainSync.Codec.TimeLimits`.
+- Added type variable `extraFlag` to `HandleWithExpandedCtx`.
+- Added type variable `extraFlag` to `ConnectionManagerWithExpandedCtx`.
+- Added type variable `extraFlag` to `ExpandedInitiatorContext`.
+- Added type variable `extraFlag` to `OuroborosBundleWithExpandedCtx`.
+- Added type variable `extraFlag` to `MiniProtocolWithExpandedCtx`.
+- Added type variable `extraFlag` to `RunMiniProtocolWithExpandedCtx`.
+- Added type variable `extraFlag` to `Applications`.
+- Added type variable `extraFlag` to `NodeToNodeHandle`.
+- Added type variable `extraFlag` to `NodeToNodeConnectionManager`.
+- Added type variable `extraFlag` to `NodeToNodePeerConnectionHandle`.
+- Added type variable `extraFlag` to `PeerStateActions`.
+- Added type variable `extraFlag` to `ApplicationHandle`.
+- Added type variable `extraFlag` to `PeerConnectionHandle`.
+- Added type variable `extraFlag` to `PeerStateActionsArguments`.
+- Added parameter `extraFlags` to `PeerSelection.Governor.ActivePeers.belowTarget`.
+- Added parameter `extraFlags` to `PeerSelection.Governor.ActivePeers.jobPromoteWarmPeer`.
+- Added parameter `extraFlags` to `PeerSelection.Governor.EstablishedPeers.belowTarget`.
+- Added parameter `extraFlags` to `PeerSelection.Governor.EstablishedPeers.jobPromoteColdPeer`.
+- Added parameter `extraFlags` to `PeerStateActions.establishPeerConnection`.
+- Added parameter `extraFlags` to `PeerStateActions.activatePeerConnection`.
+
+### Non-Breaking
+
+- Added field `eicExtraFlags` to `ExpandedInitiatorContext`.
+- Added field `defaultExtraFlags` to `PeerSelectionGovernorArgs`.